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Finding the Fourth Proportional to 81,613.64, 122,377.39 and 25,443.28

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Solution

The fourth proportional to 81,613.64, 122,377.39 and 25,443.28 is: 38,151.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,613.64 : 122,377.39 = 25,443.28 : x
  2. Step 2: Convert to fraction form
    81,613.64/122,377.39 = 25,443.28/x
  3. Step 3: Cross multiply
    81,613.64x = 122,377.39 × 25,443.28
  4. Step 4: Simplify right side
    81,613.64x = 3,113,681,460.34
  5. Step 5: Solve for x
    x = 3,113,681,460.34/81,613.64
  6. Step 6: Final answer
    x = 38,151.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.