Home / 87,132.06-120,223.92-56,961.60

Finding the Fourth Proportional to 87,132.06, 120,223.92 and 56,961.60

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Solution

The fourth proportional to 87,132.06, 120,223.92 and 56,961.60 is: 78,595.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,132.06 : 120,223.92 = 56,961.60 : x
  2. Step 2: Convert to fraction form
    87,132.06/120,223.92 = 56,961.60/x
  3. Step 3: Cross multiply
    87,132.06x = 120,223.92 × 56,961.60
  4. Step 4: Simplify right side
    87,132.06x = 6,848,146,841.47
  5. Step 5: Solve for x
    x = 6,848,146,841.47/87,132.06
  6. Step 6: Final answer
    x = 78,595.03

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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.