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Finding the Fourth Proportional to 80,747, 121,124.82 and 25,347.32

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Solution

The fourth proportional to 80,747, 121,124.82 and 25,347.32 is: 38,022.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,747 : 121,124.82 = 25,347.32 : x
  2. Step 2: Convert to fraction form
    80,747/121,124.82 = 25,347.32/x
  3. Step 3: Cross multiply
    80,747x = 121,124.82 × 25,347.32
  4. Step 4: Simplify right side
    80,747x = 3,070,189,572.48
  5. Step 5: Solve for x
    x = 3,070,189,572.48/80,747
  6. Step 6: Final answer
    x = 38,022.34

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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.