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Finding the Fourth Proportional to 36,876.40, 55,247.40 and 21,247.60

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Solution

The fourth proportional to 36,876.40, 55,247.40 and 21,247.60 is: 31,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,876.40 : 55,247.40 = 21,247.60 : x
  2. Step 2: Convert to fraction form
    36,876.40/55,247.40 = 21,247.60/x
  3. Step 3: Cross multiply
    36,876.40x = 55,247.40 × 21,247.60
  4. Step 4: Simplify right side
    36,876.40x = 1,173,874,656.24
  5. Step 5: Solve for x
    x = 1,173,874,656.24/36,876.40
  6. Step 6: Final answer
    x = 31,832.68

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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.