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Finding the Fourth Proportional to 72,737.75, 100,377.44 and 40,906.88

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Solution

The fourth proportional to 72,737.75, 100,377.44 and 40,906.88 is: 56,451.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,737.75 : 100,377.44 = 40,906.88 : x
  2. Step 2: Convert to fraction form
    72,737.75/100,377.44 = 40,906.88/x
  3. Step 3: Cross multiply
    72,737.75x = 100,377.44 × 40,906.88
  4. Step 4: Simplify right side
    72,737.75x = 4,106,127,892.79
  5. Step 5: Solve for x
    x = 4,106,127,892.79/72,737.75
  6. Step 6: Final answer
    x = 56,451.13

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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.