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Finding the Fourth Proportional to 80,767.88, 121,156.68 and 25,363.88

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Solution

The fourth proportional to 80,767.88, 121,156.68 and 25,363.88 is: 38,047.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,767.88 : 121,156.68 = 25,363.88 : x
  2. Step 2: Convert to fraction form
    80,767.88/121,156.68 = 25,363.88/x
  3. Step 3: Cross multiply
    80,767.88x = 121,156.68 × 25,363.88
  4. Step 4: Simplify right side
    80,767.88x = 3,073,003,492.72
  5. Step 5: Solve for x
    x = 3,073,003,492.72/80,767.88
  6. Step 6: Final answer
    x = 38,047.35

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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.