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Finding the Fourth Proportional to 72,647.68, 100,258.08 and 54,711.04

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Solution

The fourth proportional to 72,647.68, 100,258.08 and 54,711.04 is: 75,504.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,647.68 : 100,258.08 = 54,711.04 : x
  2. Step 2: Convert to fraction form
    72,647.68/100,258.08 = 54,711.04/x
  3. Step 3: Cross multiply
    72,647.68x = 100,258.08 × 54,711.04
  4. Step 4: Simplify right side
    72,647.68x = 5,485,223,825.20
  5. Step 5: Solve for x
    x = 5,485,223,825.20/72,647.68
  6. Step 6: Final answer
    x = 75,504.46

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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.