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Finding the Fourth Proportional to 60,761.60, 91,142.40 and 38,672.90

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Solution

The fourth proportional to 60,761.60, 91,142.40 and 38,672.90 is: 58,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,761.60 : 91,142.40 = 38,672.90 : x
  2. Step 2: Convert to fraction form
    60,761.60/91,142.40 = 38,672.90/x
  3. Step 3: Cross multiply
    60,761.60x = 91,142.40 × 38,672.90
  4. Step 4: Simplify right side
    60,761.60x = 3,524,740,920.96
  5. Step 5: Solve for x
    x = 3,524,740,920.96/60,761.60
  6. Step 6: Final answer
    x = 58,009.35

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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.