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Finding the Fourth Proportional to 78,159.43, 107,877.72 and 44,187.58

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Solution

The fourth proportional to 78,159.43, 107,877.72 and 44,187.58 is: 60,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,159.43 : 107,877.72 = 44,187.58 : x
  2. Step 2: Convert to fraction form
    78,159.43/107,877.72 = 44,187.58/x
  3. Step 3: Cross multiply
    78,159.43x = 107,877.72 × 44,187.58
  4. Step 4: Simplify right side
    78,159.43x = 4,766,855,076.46
  5. Step 5: Solve for x
    x = 4,766,855,076.46/78,159.43
  6. Step 6: Final answer
    x = 60,988.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.