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Finding the Fourth Proportional to 84,488.76, 126,805.86 and 43,990.92

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Solution

The fourth proportional to 84,488.76, 126,805.86 and 43,990.92 is: 66,024.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,488.76 : 126,805.86 = 43,990.92 : x
  2. Step 2: Convert to fraction form
    84,488.76/126,805.86 = 43,990.92/x
  3. Step 3: Cross multiply
    84,488.76x = 126,805.86 × 43,990.92
  4. Step 4: Simplify right side
    84,488.76x = 5,578,306,442.79
  5. Step 5: Solve for x
    x = 5,578,306,442.79/84,488.76
  6. Step 6: Final answer
    x = 66,024.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.