Home / 80,761,320.80-121,141,981.20-48,512,693.60

Finding the Fourth Proportional to 80,761,320.80, 121,141,981.20 and 48,512,693.60

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Solution

The fourth proportional to 80,761,320.80, 121,141,981.20 and 48,512,693.60 is: 72,769,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,761,320.80 : 121,141,981.20 = 48,512,693.60 : x
  2. Step 2: Convert to fraction form
    80,761,320.80/121,141,981.20 = 48,512,693.60/x
  3. Step 3: Cross multiply
    80,761,320.80x = 121,141,981.20 × 48,512,693.60
  4. Step 4: Simplify right side
    80,761,320.80x = 5,876,923,816,052,561
  5. Step 5: Solve for x
    x = 5,876,923,816,052,561/80,761,320.80
  6. Step 6: Final answer
    x = 72,769,040.40

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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.