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Finding the Fourth Proportional to 72,765.92, 100,363.24 and 50,112.12

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Solution

The fourth proportional to 72,765.92, 100,363.24 and 50,112.12 is: 69,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,765.92 : 100,363.24 = 50,112.12 : x
  2. Step 2: Convert to fraction form
    72,765.92/100,363.24 = 50,112.12/x
  3. Step 3: Cross multiply
    72,765.92x = 100,363.24 × 50,112.12
  4. Step 4: Simplify right side
    72,765.92x = 5,029,414,726.47
  5. Step 5: Solve for x
    x = 5,029,414,726.47/72,765.92
  6. Step 6: Final answer
    x = 69,117.72

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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.