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Finding the Fourth Proportional to 71,956.64, 99,300.48 and 40,125.44

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Solution

The fourth proportional to 71,956.64, 99,300.48 and 40,125.44 is: 55,373.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.64 : 99,300.48 = 40,125.44 : x
  2. Step 2: Convert to fraction form
    71,956.64/99,300.48 = 40,125.44/x
  3. Step 3: Cross multiply
    71,956.64x = 99,300.48 × 40,125.44
  4. Step 4: Simplify right side
    71,956.64x = 3,984,475,452.21
  5. Step 5: Solve for x
    x = 3,984,475,452.21/71,956.64
  6. Step 6: Final answer
    x = 55,373.28

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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.