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Finding the Fourth Proportional to 72,997.88, 100,737.09 and 39,463.88

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Solution

The fourth proportional to 72,997.88, 100,737.09 and 39,463.88 is: 54,460.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,997.88 : 100,737.09 = 39,463.88 : x
  2. Step 2: Convert to fraction form
    72,997.88/100,737.09 = 39,463.88/x
  3. Step 3: Cross multiply
    72,997.88x = 100,737.09 × 39,463.88
  4. Step 4: Simplify right side
    72,997.88x = 3,975,475,927.62
  5. Step 5: Solve for x
    x = 3,975,475,927.62/72,997.88
  6. Step 6: Final answer
    x = 54,460.16

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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.