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Finding the Fourth Proportional to 69,705.73, 96,144.65 and 42,863.41

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Solution

The fourth proportional to 69,705.73, 96,144.65 and 42,863.41 is: 59,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,705.73 : 96,144.65 = 42,863.41 : x
  2. Step 2: Convert to fraction form
    69,705.73/96,144.65 = 42,863.41/x
  3. Step 3: Cross multiply
    69,705.73x = 96,144.65 × 42,863.41
  4. Step 4: Simplify right side
    69,705.73x = 4,121,087,337.94
  5. Step 5: Solve for x
    x = 4,121,087,337.94/69,705.73
  6. Step 6: Final answer
    x = 59,121.21

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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.