Home / 81,538.59-122,292.42-25,379.40

Finding the Fourth Proportional to 81,538.59, 122,292.42 and 25,379.40

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Solution

The fourth proportional to 81,538.59, 122,292.42 and 25,379.40 is: 38,064.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,538.59 : 122,292.42 = 25,379.40 : x
  2. Step 2: Convert to fraction form
    81,538.59/122,292.42 = 25,379.40/x
  3. Step 3: Cross multiply
    81,538.59x = 122,292.42 × 25,379.40
  4. Step 4: Simplify right side
    81,538.59x = 3,103,708,244.15
  5. Step 5: Solve for x
    x = 3,103,708,244.15/81,538.59
  6. Step 6: Final answer
    x = 38,064.29

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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.