Home / 71,976.07-99,327.12-40,147.02

Finding the Fourth Proportional to 71,976.07, 99,327.12 and 40,147.02

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Solution

The fourth proportional to 71,976.07, 99,327.12 and 40,147.02 is: 55,402.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.07 : 99,327.12 = 40,147.02 : x
  2. Step 2: Convert to fraction form
    71,976.07/99,327.12 = 40,147.02/x
  3. Step 3: Cross multiply
    71,976.07x = 99,327.12 × 40,147.02
  4. Step 4: Simplify right side
    71,976.07x = 3,987,687,722.63
  5. Step 5: Solve for x
    x = 3,987,687,722.63/71,976.07
  6. Step 6: Final answer
    x = 55,402.96

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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.