Home / 71,640.20-107,460.30-49,521.80

Finding the Fourth Proportional to 71,640.20, 107,460.30 and 49,521.80

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Solution

The fourth proportional to 71,640.20, 107,460.30 and 49,521.80 is: 74,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,640.20 : 107,460.30 = 49,521.80 : x
  2. Step 2: Convert to fraction form
    71,640.20/107,460.30 = 49,521.80/x
  3. Step 3: Cross multiply
    71,640.20x = 107,460.30 × 49,521.80
  4. Step 4: Simplify right side
    71,640.20x = 5,321,627,484.54
  5. Step 5: Solve for x
    x = 5,321,627,484.54/71,640.20
  6. Step 6: Final answer
    x = 74,282.70

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1.5x scale

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.