Home / 82,007.91-122,984.26-31,395.06

Finding the Fourth Proportional to 82,007.91, 122,984.26 and 31,395.06

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Solution

The fourth proportional to 82,007.91, 122,984.26 and 31,395.06 is: 47,082.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,007.91 : 122,984.26 = 31,395.06 : x
  2. Step 2: Convert to fraction form
    82,007.91/122,984.26 = 31,395.06/x
  3. Step 3: Cross multiply
    82,007.91x = 122,984.26 × 31,395.06
  4. Step 4: Simplify right side
    82,007.91x = 3,861,098,143.27
  5. Step 5: Solve for x
    x = 3,861,098,143.27/82,007.91
  6. Step 6: Final answer
    x = 47,082.02

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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.