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Finding the Fourth Proportional to 79,264.31, 118,861.89 and 29,981.75

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Solution

The fourth proportional to 79,264.31, 118,861.89 and 29,981.75 is: 44,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,264.31 : 118,861.89 = 29,981.75 : x
  2. Step 2: Convert to fraction form
    79,264.31/118,861.89 = 29,981.75/x
  3. Step 3: Cross multiply
    79,264.31x = 118,861.89 × 29,981.75
  4. Step 4: Simplify right side
    79,264.31x = 3,563,687,470.51
  5. Step 5: Solve for x
    x = 3,563,687,470.51/79,264.31
  6. Step 6: Final answer
    x = 44,959.55

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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.