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Finding the Fourth Proportional to 72,815.68, 100,493.22 and 44,540.20

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Solution

The fourth proportional to 72,815.68, 100,493.22 and 44,540.20 is: 61,470.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,815.68 : 100,493.22 = 44,540.20 : x
  2. Step 2: Convert to fraction form
    72,815.68/100,493.22 = 44,540.20/x
  3. Step 3: Cross multiply
    72,815.68x = 100,493.22 × 44,540.20
  4. Step 4: Simplify right side
    72,815.68x = 4,475,988,117.44
  5. Step 5: Solve for x
    x = 4,475,988,117.44/72,815.68
  6. Step 6: Final answer
    x = 61,470.11

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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.