Home / 81,651,331.62-122,434,470-38,508,951.24

Finding the Fourth Proportional to 81,651,331.62, 122,434,470 and 38,508,951.24

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Solution

The fourth proportional to 81,651,331.62, 122,434,470 and 38,508,951.24 is: 57,743,369.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,651,331.62 : 122,434,470 = 38,508,951.24 : x
  2. Step 2: Convert to fraction form
    81,651,331.62/122,434,470 = 38,508,951.24/x
  3. Step 3: Cross multiply
    81,651,331.62x = 122,434,470 × 38,508,951.24
  4. Step 4: Simplify right side
    81,651,331.62x = 4,714,823,035,325,243
  5. Step 5: Solve for x
    x = 4,714,823,035,325,243/81,651,331.62
  6. Step 6: Final answer
    x = 57,743,369.79

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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.