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Finding the Fourth Proportional to 48,402.80, 66,793.76 and 28,260.80

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Solution

The fourth proportional to 48,402.80, 66,793.76 and 28,260.80 is: 38,998.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,402.80 : 66,793.76 = 28,260.80 : x
  2. Step 2: Convert to fraction form
    48,402.80/66,793.76 = 28,260.80/x
  3. Step 3: Cross multiply
    48,402.80x = 66,793.76 × 28,260.80
  4. Step 4: Simplify right side
    48,402.80x = 1,887,645,092.61
  5. Step 5: Solve for x
    x = 1,887,645,092.61/48,402.80
  6. Step 6: Final answer
    x = 38,998.68

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1.5x scale

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.