Home / 81,007.91-111,663.61-55,470.13

Finding the Fourth Proportional to 81,007.91, 111,663.61 and 55,470.13

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Solution

The fourth proportional to 81,007.91, 111,663.61 and 55,470.13 is: 76,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007.91 : 111,663.61 = 55,470.13 : x
  2. Step 2: Convert to fraction form
    81,007.91/111,663.61 = 55,470.13/x
  3. Step 3: Cross multiply
    81,007.91x = 111,663.61 × 55,470.13
  4. Step 4: Simplify right side
    81,007.91x = 6,193,995,485.26
  5. Step 5: Solve for x
    x = 6,193,995,485.26/81,007.91
  6. Step 6: Final answer
    x = 76,461.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.