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Finding the Fourth Proportional to 71,382.53, 98,507.94 and 39,551.96

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Solution

The fourth proportional to 71,382.53, 98,507.94 and 39,551.96 is: 54,581.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,382.53 : 98,507.94 = 39,551.96 : x
  2. Step 2: Convert to fraction form
    71,382.53/98,507.94 = 39,551.96/x
  3. Step 3: Cross multiply
    71,382.53x = 98,507.94 × 39,551.96
  4. Step 4: Simplify right side
    71,382.53x = 3,896,182,102.56
  5. Step 5: Solve for x
    x = 3,896,182,102.56/71,382.53
  6. Step 6: Final answer
    x = 54,581.73

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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.