Home / 89,635.68-123,649.20-55,622.88

Finding the Fourth Proportional to 89,635.68, 123,649.20 and 55,622.88

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Solution

The fourth proportional to 89,635.68, 123,649.20 and 55,622.88 is: 76,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,635.68 : 123,649.20 = 55,622.88 : x
  2. Step 2: Convert to fraction form
    89,635.68/123,649.20 = 55,622.88/x
  3. Step 3: Cross multiply
    89,635.68x = 123,649.20 × 55,622.88
  4. Step 4: Simplify right side
    89,635.68x = 6,877,724,613.70
  5. Step 5: Solve for x
    x = 6,877,724,613.70/89,635.68
  6. Step 6: Final answer
    x = 76,729.76

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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.