Home / 89,427.85-123,287.13-71,339.97

Finding the Fourth Proportional to 89,427.85, 123,287.13 and 71,339.97

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Solution

The fourth proportional to 89,427.85, 123,287.13 and 71,339.97 is: 98,350.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,427.85 : 123,287.13 = 71,339.97 : x
  2. Step 2: Convert to fraction form
    89,427.85/123,287.13 = 71,339.97/x
  3. Step 3: Cross multiply
    89,427.85x = 123,287.13 × 71,339.97
  4. Step 4: Simplify right side
    89,427.85x = 8,795,299,779.66
  5. Step 5: Solve for x
    x = 8,795,299,779.66/89,427.85
  6. Step 6: Final answer
    x = 98,350.79

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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.