Home / 87,200.74-120,339.66-61,752.70

Finding the Fourth Proportional to 87,200.74, 120,339.66 and 61,752.70

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Solution

The fourth proportional to 87,200.74, 120,339.66 and 61,752.70 is: 85,220.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,200.74 : 120,339.66 = 61,752.70 : x
  2. Step 2: Convert to fraction form
    87,200.74/120,339.66 = 61,752.70/x
  3. Step 3: Cross multiply
    87,200.74x = 120,339.66 × 61,752.70
  4. Step 4: Simplify right side
    87,200.74x = 7,431,298,922.08
  5. Step 5: Solve for x
    x = 7,431,298,922.08/87,200.74
  6. Step 6: Final answer
    x = 85,220.59

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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.