Home / 89,218.89-123,123.11-51,505.29

Finding the Fourth Proportional to 89,218.89, 123,123.11 and 51,505.29

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Solution

The fourth proportional to 89,218.89, 123,123.11 and 51,505.29 is: 71,077.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,218.89 : 123,123.11 = 51,505.29 : x
  2. Step 2: Convert to fraction form
    89,218.89/123,123.11 = 51,505.29/x
  3. Step 3: Cross multiply
    89,218.89x = 123,123.11 × 51,505.29
  4. Step 4: Simplify right side
    89,218.89x = 6,341,491,228.73
  5. Step 5: Solve for x
    x = 6,341,491,228.73/89,218.89
  6. Step 6: Final answer
    x = 71,077.90

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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.