Home / 89,815.07-123,939.55-51,565.79

Finding the Fourth Proportional to 89,815.07, 123,939.55 and 51,565.79

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Solution

The fourth proportional to 89,815.07, 123,939.55 and 51,565.79 is: 71,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,815.07 : 123,939.55 = 51,565.79 : x
  2. Step 2: Convert to fraction form
    89,815.07/123,939.55 = 51,565.79/x
  3. Step 3: Cross multiply
    89,815.07x = 123,939.55 × 51,565.79
  4. Step 4: Simplify right side
    89,815.07x = 6,391,041,182.30
  5. Step 5: Solve for x
    x = 6,391,041,182.30/89,815.07
  6. Step 6: Final answer
    x = 71,157.78

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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.