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Finding the Fourth Proportional to 36,762,483.80, 55,143,725.70 and 20,638,170.20

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Solution

The fourth proportional to 36,762,483.80, 55,143,725.70 and 20,638,170.20 is: 30,957,255.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,762,483.80 : 55,143,725.70 = 20,638,170.20 : x
  2. Step 2: Convert to fraction form
    36,762,483.80/55,143,725.70 = 20,638,170.20/x
  3. Step 3: Cross multiply
    36,762,483.80x = 55,143,725.70 × 20,638,170.20
  4. Step 4: Simplify right side
    36,762,483.80x = 1,138,065,596,458,714.25
  5. Step 5: Solve for x
    x = 1,138,065,596,458,714.25/36,762,483.80
  6. Step 6: Final answer
    x = 30,957,255.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.