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Finding the Fourth Proportional to 71,956.94, 99,301.01 and 40,127.85

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Solution

The fourth proportional to 71,956.94, 99,301.01 and 40,127.85 is: 55,376.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.94 : 99,301.01 = 40,127.85 : x
  2. Step 2: Convert to fraction form
    71,956.94/99,301.01 = 40,127.85/x
  3. Step 3: Cross multiply
    71,956.94x = 99,301.01 × 40,127.85
  4. Step 4: Simplify right side
    71,956.94x = 3,984,735,833.49
  5. Step 5: Solve for x
    x = 3,984,735,833.49/71,956.94
  6. Step 6: Final answer
    x = 55,376.68

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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.