Home / 89,686.50-123,770.66-55,713.75

Finding the Fourth Proportional to 89,686.50, 123,770.66 and 55,713.75

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Solution

The fourth proportional to 89,686.50, 123,770.66 and 55,713.75 is: 76,887.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,686.50 : 123,770.66 = 55,713.75 : x
  2. Step 2: Convert to fraction form
    89,686.50/123,770.66 = 55,713.75/x
  3. Step 3: Cross multiply
    89,686.50x = 123,770.66 × 55,713.75
  4. Step 4: Simplify right side
    89,686.50x = 6,895,727,330.01
  5. Step 5: Solve for x
    x = 6,895,727,330.01/89,686.50
  6. Step 6: Final answer
    x = 76,887.02

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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.