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Finding the Fourth Proportional to 69,572.96, 96,027.84 and 42,721.92

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Solution

The fourth proportional to 69,572.96, 96,027.84 and 42,721.92 is: 58,966.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,572.96 : 96,027.84 = 42,721.92 : x
  2. Step 2: Convert to fraction form
    69,572.96/96,027.84 = 42,721.92/x
  3. Step 3: Cross multiply
    69,572.96x = 96,027.84 × 42,721.92
  4. Step 4: Simplify right side
    69,572.96x = 4,102,493,698.25
  5. Step 5: Solve for x
    x = 4,102,493,698.25/69,572.96
  6. Step 6: Final answer
    x = 58,966.78

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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.