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Finding the Fourth Proportional to 72,478.74, 108,744 and 44,073.48

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Solution

The fourth proportional to 72,478.74, 108,744 and 44,073.48 is: 66,125.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,478.74 : 108,744 = 44,073.48 : x
  2. Step 2: Convert to fraction form
    72,478.74/108,744 = 44,073.48/x
  3. Step 3: Cross multiply
    72,478.74x = 108,744 × 44,073.48
  4. Step 4: Simplify right side
    72,478.74x = 4,792,726,509.12
  5. Step 5: Solve for x
    x = 4,792,726,509.12/72,478.74
  6. Step 6: Final answer
    x = 66,125.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.