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Finding the Fourth Proportional to 72,540.92, 100,118.22 and 49,860.92

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Solution

The fourth proportional to 72,540.92, 100,118.22 and 49,860.92 is: 68,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,540.92 : 100,118.22 = 49,860.92 : x
  2. Step 2: Convert to fraction form
    72,540.92/100,118.22 = 49,860.92/x
  3. Step 3: Cross multiply
    72,540.92x = 100,118.22 × 49,860.92
  4. Step 4: Simplify right side
    72,540.92x = 4,991,986,557.96
  5. Step 5: Solve for x
    x = 4,991,986,557.96/72,540.92
  6. Step 6: Final answer
    x = 68,816.15

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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.