Home / 71,120.48-98,149.07-40,905.75

Finding the Fourth Proportional to 71,120.48, 98,149.07 and 40,905.75

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Solution

The fourth proportional to 71,120.48, 98,149.07 and 40,905.75 is: 56,451.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,120.48 : 98,149.07 = 40,905.75 : x
  2. Step 2: Convert to fraction form
    71,120.48/98,149.07 = 40,905.75/x
  3. Step 3: Cross multiply
    71,120.48x = 98,149.07 × 40,905.75
  4. Step 4: Simplify right side
    71,120.48x = 4,014,861,115.62
  5. Step 5: Solve for x
    x = 4,014,861,115.62/71,120.48
  6. Step 6: Final answer
    x = 56,451.55

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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.