Home / 81,839.42-122,764.31-25,681.74

Finding the Fourth Proportional to 81,839.42, 122,764.31 and 25,681.74

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Solution

The fourth proportional to 81,839.42, 122,764.31 and 25,681.74 is: 38,524.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,839.42 : 122,764.31 = 25,681.74 : x
  2. Step 2: Convert to fraction form
    81,839.42/122,764.31 = 25,681.74/x
  3. Step 3: Cross multiply
    81,839.42x = 122,764.31 × 25,681.74
  4. Step 4: Simplify right side
    81,839.42x = 3,152,801,385.09
  5. Step 5: Solve for x
    x = 3,152,801,385.09/81,839.42
  6. Step 6: Final answer
    x = 38,524.24

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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.