Home / 81,730,105.25-122,595,609.39-20,319,264.02

Finding the Fourth Proportional to 81,730,105.25, 122,595,609.39 and 20,319,264.02

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Solution

The fourth proportional to 81,730,105.25, 122,595,609.39 and 20,319,264.02 is: 30,479,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,730,105.25 : 122,595,609.39 = 20,319,264.02 : x
  2. Step 2: Convert to fraction form
    81,730,105.25/122,595,609.39 = 20,319,264.02/x
  3. Step 3: Cross multiply
    81,730,105.25x = 122,595,609.39 × 20,319,264.02
  4. Step 4: Simplify right side
    81,730,105.25x = 2,491,052,554,786,605
  5. Step 5: Solve for x
    x = 2,491,052,554,786,605/81,730,105.25
  6. Step 6: Final answer
    x = 30,479,008.28

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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.