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Finding the Fourth Proportional to 72,241.18, 108,903.20 and 67,424.38

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Solution

The fourth proportional to 72,241.18, 108,903.20 and 67,424.38 is: 101,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,241.18 : 108,903.20 = 67,424.38 : x
  2. Step 2: Convert to fraction form
    72,241.18/108,903.20 = 67,424.38/x
  3. Step 3: Cross multiply
    72,241.18x = 108,903.20 × 67,424.38
  4. Step 4: Simplify right side
    72,241.18x = 7,342,730,740.02
  5. Step 5: Solve for x
    x = 7,342,730,740.02/72,241.18
  6. Step 6: Final answer
    x = 101,641.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.