Home / 87,500.60-120,708.80-57,272.60

Finding the Fourth Proportional to 87,500.60, 120,708.80 and 57,272.60

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Solution

The fourth proportional to 87,500.60, 120,708.80 and 57,272.60 is: 79,008.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,500.60 : 120,708.80 = 57,272.60 : x
  2. Step 2: Convert to fraction form
    87,500.60/120,708.80 = 57,272.60/x
  3. Step 3: Cross multiply
    87,500.60x = 120,708.80 × 57,272.60
  4. Step 4: Simplify right side
    87,500.60x = 6,913,306,818.88
  5. Step 5: Solve for x
    x = 6,913,306,818.88/87,500.60
  6. Step 6: Final answer
    x = 79,008.68

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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.