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Finding the Fourth Proportional to 71,374.41, 98,499.91 and 39,543.31

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Solution

The fourth proportional to 71,374.41, 98,499.91 and 39,543.31 is: 54,571.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,374.41 : 98,499.91 = 39,543.31 : x
  2. Step 2: Convert to fraction form
    71,374.41/98,499.91 = 39,543.31/x
  3. Step 3: Cross multiply
    71,374.41x = 98,499.91 × 39,543.31
  4. Step 4: Simplify right side
    71,374.41x = 3,895,011,983.60
  5. Step 5: Solve for x
    x = 3,895,011,983.60/71,374.41
  6. Step 6: Final answer
    x = 54,571.55

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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.