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Finding the Fourth Proportional to 72,258.59, 99,744.54 and 48,376.55

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Solution

The fourth proportional to 72,258.59, 99,744.54 and 48,376.55 is: 66,778.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,258.59 : 99,744.54 = 48,376.55 : x
  2. Step 2: Convert to fraction form
    72,258.59/99,744.54 = 48,376.55/x
  3. Step 3: Cross multiply
    72,258.59x = 99,744.54 × 48,376.55
  4. Step 4: Simplify right side
    72,258.59x = 4,825,296,726.54
  5. Step 5: Solve for x
    x = 4,825,296,726.54/72,258.59
  6. Step 6: Final answer
    x = 66,778.17

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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.