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Finding the Fourth Proportional to 71,956.62, 99,300.51 and 40,126.86

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Solution

The fourth proportional to 71,956.62, 99,300.51 and 40,126.86 is: 55,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.62 : 99,300.51 = 40,126.86 : x
  2. Step 2: Convert to fraction form
    71,956.62/99,300.51 = 40,126.86/x
  3. Step 3: Cross multiply
    71,956.62x = 99,300.51 × 40,126.86
  4. Step 4: Simplify right side
    71,956.62x = 3,984,617,662.70
  5. Step 5: Solve for x
    x = 3,984,617,662.70/71,956.62
  6. Step 6: Final answer
    x = 55,375.28

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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.