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Finding the Fourth Proportional to 80,986,368.30, 121,479,552.45 and 74,750,793.90

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Solution

The fourth proportional to 80,986,368.30, 121,479,552.45 and 74,750,793.90 is: 112,126,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986,368.30 : 121,479,552.45 = 74,750,793.90 : x
  2. Step 2: Convert to fraction form
    80,986,368.30/121,479,552.45 = 74,750,793.90/x
  3. Step 3: Cross multiply
    80,986,368.30x = 121,479,552.45 × 74,750,793.90
  4. Step 4: Simplify right side
    80,986,368.30x = 9,080,692,988,254,192
  5. Step 5: Solve for x
    x = 9,080,692,988,254,192/80,986,368.30
  6. Step 6: Final answer
    x = 112,126,190.85

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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.