Home / 81,350,484.32-122,025,687.60-20,766,190.88

Finding the Fourth Proportional to 81,350,484.32, 122,025,687.60 and 20,766,190.88

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Solution

The fourth proportional to 81,350,484.32, 122,025,687.60 and 20,766,190.88 is: 31,149,276.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350,484.32 : 122,025,687.60 = 20,766,190.88 : x
  2. Step 2: Convert to fraction form
    81,350,484.32/122,025,687.60 = 20,766,190.88/x
  3. Step 3: Cross multiply
    81,350,484.32x = 122,025,687.60 × 20,766,190.88
  4. Step 4: Simplify right side
    81,350,484.32x = 2,534,008,720,964,849
  5. Step 5: Solve for x
    x = 2,534,008,720,964,849/81,350,484.32
  6. Step 6: Final answer
    x = 31,149,276.40

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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.