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Finding the Fourth Proportional to 84,511.98, 126,726.95 and 42,373.95

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Solution

The fourth proportional to 84,511.98, 126,726.95 and 42,373.95 is: 63,540.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,511.98 : 126,726.95 = 42,373.95 : x
  2. Step 2: Convert to fraction form
    84,511.98/126,726.95 = 42,373.95/x
  3. Step 3: Cross multiply
    84,511.98x = 126,726.95 × 42,373.95
  4. Step 4: Simplify right side
    84,511.98x = 5,369,921,231.08
  5. Step 5: Solve for x
    x = 5,369,921,231.08/84,511.98
  6. Step 6: Final answer
    x = 63,540.36

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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.