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Finding the Fourth Proportional to 62,387.40, 86,104.32 and 39,736.10

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Solution

The fourth proportional to 62,387.40, 86,104.32 and 39,736.10 is: 54,842.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,387.40 : 86,104.32 = 39,736.10 : x
  2. Step 2: Convert to fraction form
    62,387.40/86,104.32 = 39,736.10/x
  3. Step 3: Cross multiply
    62,387.40x = 86,104.32 × 39,736.10
  4. Step 4: Simplify right side
    62,387.40x = 3,421,449,869.95
  5. Step 5: Solve for x
    x = 3,421,449,869.95/62,387.40
  6. Step 6: Final answer
    x = 54,842.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.