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Finding the Fourth Proportional to 36,402.40, 54,530.70 and 20,801.80

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Solution

The fourth proportional to 36,402.40, 54,530.70 and 20,801.80 is: 31,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,402.40 : 54,530.70 = 20,801.80 : x
  2. Step 2: Convert to fraction form
    36,402.40/54,530.70 = 20,801.80/x
  3. Step 3: Cross multiply
    36,402.40x = 54,530.70 × 20,801.80
  4. Step 4: Simplify right side
    36,402.40x = 1,134,336,715.26
  5. Step 5: Solve for x
    x = 1,134,336,715.26/36,402.40
  6. Step 6: Final answer
    x = 31,161.04

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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.