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Finding the Fourth Proportional to 71,345.59, 107,010.28 and 18,759.17

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Solution

The fourth proportional to 71,345.59, 107,010.28 and 18,759.17 is: 28,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,345.59 : 107,010.28 = 18,759.17 : x
  2. Step 2: Convert to fraction form
    71,345.59/107,010.28 = 18,759.17/x
  3. Step 3: Cross multiply
    71,345.59x = 107,010.28 × 18,759.17
  4. Step 4: Simplify right side
    71,345.59x = 2,007,424,034.27
  5. Step 5: Solve for x
    x = 2,007,424,034.27/71,345.59
  6. Step 6: Final answer
    x = 28,136.62

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1.5x scale

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.