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Finding the Fourth Proportional to 71,487.52, 98,649.44 and 39,656.08

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Solution

The fourth proportional to 71,487.52, 98,649.44 and 39,656.08 is: 54,723.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,487.52 : 98,649.44 = 39,656.08 : x
  2. Step 2: Convert to fraction form
    71,487.52/98,649.44 = 39,656.08/x
  3. Step 3: Cross multiply
    71,487.52x = 98,649.44 × 39,656.08
  4. Step 4: Simplify right side
    71,487.52x = 3,912,050,084.60
  5. Step 5: Solve for x
    x = 3,912,050,084.60/71,487.52
  6. Step 6: Final answer
    x = 54,723.54

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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.