Home / 87,350.28-120,508.38-55,074.28

Finding the Fourth Proportional to 87,350.28, 120,508.38 and 55,074.28

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Solution

The fourth proportional to 87,350.28, 120,508.38 and 55,074.28 is: 75,980.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,350.28 : 120,508.38 = 55,074.28 : x
  2. Step 2: Convert to fraction form
    87,350.28/120,508.38 = 55,074.28/x
  3. Step 3: Cross multiply
    87,350.28x = 120,508.38 × 55,074.28
  4. Step 4: Simplify right side
    87,350.28x = 6,636,912,262.47
  5. Step 5: Solve for x
    x = 6,636,912,262.47/87,350.28
  6. Step 6: Final answer
    x = 75,980.43

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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.