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Finding the Fourth Proportional to 72,737.31, 100,343.60 and 47,241.87

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Solution

The fourth proportional to 72,737.31, 100,343.60 and 47,241.87 is: 65,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,737.31 : 100,343.60 = 47,241.87 : x
  2. Step 2: Convert to fraction form
    72,737.31/100,343.60 = 47,241.87/x
  3. Step 3: Cross multiply
    72,737.31x = 100,343.60 × 47,241.87
  4. Step 4: Simplify right side
    72,737.31x = 4,740,419,070.32
  5. Step 5: Solve for x
    x = 4,740,419,070.32/72,737.31
  6. Step 6: Final answer
    x = 65,171.77

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1.5x scale

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.