Home / 81,640.18-122,346.26-44,119.36

Finding the Fourth Proportional to 81,640.18, 122,346.26 and 44,119.36

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Solution

The fourth proportional to 81,640.18, 122,346.26 and 44,119.36 is: 66,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,640.18 : 122,346.26 = 44,119.36 : x
  2. Step 2: Convert to fraction form
    81,640.18/122,346.26 = 44,119.36/x
  3. Step 3: Cross multiply
    81,640.18x = 122,346.26 × 44,119.36
  4. Step 4: Simplify right side
    81,640.18x = 5,397,838,689.59
  5. Step 5: Solve for x
    x = 5,397,838,689.59/81,640.18
  6. Step 6: Final answer
    x = 66,117.43

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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.