Home / 48,458.20-72,687.30-45,539.80

Finding the Fourth Proportional to 48,458.20, 72,687.30 and 45,539.80

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Solution

The fourth proportional to 48,458.20, 72,687.30 and 45,539.80 is: 68,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,458.20 : 72,687.30 = 45,539.80 : x
  2. Step 2: Convert to fraction form
    48,458.20/72,687.30 = 45,539.80/x
  3. Step 3: Cross multiply
    48,458.20x = 72,687.30 × 45,539.80
  4. Step 4: Simplify right side
    48,458.20x = 3,310,165,104.54
  5. Step 5: Solve for x
    x = 3,310,165,104.54/48,458.20
  6. Step 6: Final answer
    x = 68,309.70

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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.