Home / 71,721.70-107,546.10-42,148.60

Finding the Fourth Proportional to 71,721.70, 107,546.10 and 42,148.60

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Solution

The fourth proportional to 71,721.70, 107,546.10 and 42,148.60 is: 63,201.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,721.70 : 107,546.10 = 42,148.60 : x
  2. Step 2: Convert to fraction form
    71,721.70/107,546.10 = 42,148.60/x
  3. Step 3: Cross multiply
    71,721.70x = 107,546.10 × 42,148.60
  4. Step 4: Simplify right side
    71,721.70x = 4,532,917,550.46
  5. Step 5: Solve for x
    x = 4,532,917,550.46/71,721.70
  6. Step 6: Final answer
    x = 63,201.48

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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.