Home / 82,781.14-124,159.11-30,190.66

Finding the Fourth Proportional to 82,781.14, 124,159.11 and 30,190.66

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Solution

The fourth proportional to 82,781.14, 124,159.11 and 30,190.66 is: 45,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,781.14 : 124,159.11 = 30,190.66 : x
  2. Step 2: Convert to fraction form
    82,781.14/124,159.11 = 30,190.66/x
  3. Step 3: Cross multiply
    82,781.14x = 124,159.11 × 30,190.66
  4. Step 4: Simplify right side
    82,781.14x = 3,748,445,475.91
  5. Step 5: Solve for x
    x = 3,748,445,475.91/82,781.14
  6. Step 6: Final answer
    x = 45,281.39

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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.