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Finding the Fourth Proportional to 83,991.78, 125,946.66 and 36,646.88

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Solution

The fourth proportional to 83,991.78, 125,946.66 and 36,646.88 is: 54,952.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,991.78 : 125,946.66 = 36,646.88 : x
  2. Step 2: Convert to fraction form
    83,991.78/125,946.66 = 36,646.88/x
  3. Step 3: Cross multiply
    83,991.78x = 125,946.66 × 36,646.88
  4. Step 4: Simplify right side
    83,991.78x = 4,615,552,135.42
  5. Step 5: Solve for x
    x = 4,615,552,135.42/83,991.78
  6. Step 6: Final answer
    x = 54,952.43

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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.