Home / 87,375.30-120,497.90-64,770.60

Finding the Fourth Proportional to 87,375.30, 120,497.90 and 64,770.60

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Solution

The fourth proportional to 87,375.30, 120,497.90 and 64,770.60 is: 89,324.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,375.30 : 120,497.90 = 64,770.60 : x
  2. Step 2: Convert to fraction form
    87,375.30/120,497.90 = 64,770.60/x
  3. Step 3: Cross multiply
    87,375.30x = 120,497.90 × 64,770.60
  4. Step 4: Simplify right side
    87,375.30x = 7,804,721,281.74
  5. Step 5: Solve for x
    x = 7,804,721,281.74/87,375.30
  6. Step 6: Final answer
    x = 89,324.11

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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.