Home / 82,717.45-124,076.18-20,387.95

Finding the Fourth Proportional to 82,717.45, 124,076.18 and 20,387.95

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Solution

The fourth proportional to 82,717.45, 124,076.18 and 20,387.95 is: 30,581.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,717.45 : 124,076.18 = 20,387.95 : x
  2. Step 2: Convert to fraction form
    82,717.45/124,076.18 = 20,387.95/x
  3. Step 3: Cross multiply
    82,717.45x = 124,076.18 × 20,387.95
  4. Step 4: Simplify right side
    82,717.45x = 2,529,658,694.81
  5. Step 5: Solve for x
    x = 2,529,658,694.81/82,717.45
  6. Step 6: Final answer
    x = 30,581.92

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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.