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Finding the Fourth Proportional to 71,432.60, 98,557.02 and 56,278.28

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Solution

The fourth proportional to 71,432.60, 98,557.02 and 56,278.28 is: 77,648.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,432.60 : 98,557.02 = 56,278.28 : x
  2. Step 2: Convert to fraction form
    71,432.60/98,557.02 = 56,278.28/x
  3. Step 3: Cross multiply
    71,432.60x = 98,557.02 × 56,278.28
  4. Step 4: Simplify right side
    71,432.60x = 5,546,619,813.92
  5. Step 5: Solve for x
    x = 5,546,619,813.92/71,432.60
  6. Step 6: Final answer
    x = 77,648.30

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1.5x scale

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.