Home / 71,956.16-99,305.60-40,120.96

Finding the Fourth Proportional to 71,956.16, 99,305.60 and 40,120.96

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Solution

The fourth proportional to 71,956.16, 99,305.60 and 40,120.96 is: 55,370.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.16 : 99,305.60 = 40,120.96 : x
  2. Step 2: Convert to fraction form
    71,956.16/99,305.60 = 40,120.96/x
  3. Step 3: Cross multiply
    71,956.16x = 99,305.60 × 40,120.96
  4. Step 4: Simplify right side
    71,956.16x = 3,984,236,005.38
  5. Step 5: Solve for x
    x = 3,984,236,005.38/71,956.16
  6. Step 6: Final answer
    x = 55,370.33

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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.