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Finding the Fourth Proportional to 75,177.86, 112,784.18 and 21,871.08

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Solution

The fourth proportional to 75,177.86, 112,784.18 and 21,871.08 is: 32,811.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,177.86 : 112,784.18 = 21,871.08 : x
  2. Step 2: Convert to fraction form
    75,177.86/112,784.18 = 21,871.08/x
  3. Step 3: Cross multiply
    75,177.86x = 112,784.18 × 21,871.08
  4. Step 4: Simplify right side
    75,177.86x = 2,466,711,714.16
  5. Step 5: Solve for x
    x = 2,466,711,714.16/75,177.86
  6. Step 6: Final answer
    x = 32,811.68

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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.