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Finding the Fourth Proportional to 39,487.29, 54,486.16 and 22,491.87

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Solution

The fourth proportional to 39,487.29, 54,486.16 and 22,491.87 is: 31,035.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,487.29 : 54,486.16 = 22,491.87 : x
  2. Step 2: Convert to fraction form
    39,487.29/54,486.16 = 22,491.87/x
  3. Step 3: Cross multiply
    39,487.29x = 54,486.16 × 22,491.87
  4. Step 4: Simplify right side
    39,487.29x = 1,225,495,646.73
  5. Step 5: Solve for x
    x = 1,225,495,646.73/39,487.29
  6. Step 6: Final answer
    x = 31,035.19

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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.