Home / 82,781.64-124,159.86-30,191.16

Finding the Fourth Proportional to 82,781.64, 124,159.86 and 30,191.16

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Solution

The fourth proportional to 82,781.64, 124,159.86 and 30,191.16 is: 45,282.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,781.64 : 124,159.86 = 30,191.16 : x
  2. Step 2: Convert to fraction form
    82,781.64/124,159.86 = 30,191.16/x
  3. Step 3: Cross multiply
    82,781.64x = 124,159.86 × 30,191.16
  4. Step 4: Simplify right side
    82,781.64x = 3,748,530,198.84
  5. Step 5: Solve for x
    x = 3,748,530,198.84/82,781.64
  6. Step 6: Final answer
    x = 45,282.14

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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.