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Finding the Fourth Proportional to 103,710.72, 155,569.14 and 40,528.29

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Solution

The fourth proportional to 103,710.72, 155,569.14 and 40,528.29 is: 60,793.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,710.72 : 155,569.14 = 40,528.29 : x
  2. Step 2: Convert to fraction form
    103,710.72/155,569.14 = 40,528.29/x
  3. Step 3: Cross multiply
    103,710.72x = 155,569.14 × 40,528.29
  4. Step 4: Simplify right side
    103,710.72x = 6,304,951,220.97
  5. Step 5: Solve for x
    x = 6,304,951,220.97/103,710.72
  6. Step 6: Final answer
    x = 60,793.63

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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.