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Finding the Fourth Proportional to 61,134.72, 84,402.72 and 39,949.44

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Solution

The fourth proportional to 61,134.72, 84,402.72 and 39,949.44 is: 55,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,134.72 : 84,402.72 = 39,949.44 : x
  2. Step 2: Convert to fraction form
    61,134.72/84,402.72 = 39,949.44/x
  3. Step 3: Cross multiply
    61,134.72x = 84,402.72 × 39,949.44
  4. Step 4: Simplify right side
    61,134.72x = 3,371,841,398.48
  5. Step 5: Solve for x
    x = 3,371,841,398.48/61,134.72
  6. Step 6: Final answer
    x = 55,154.28

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1.5x scale

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.