Home / 71,976.92-99,328.32-40,147.88

Finding the Fourth Proportional to 71,976.92, 99,328.32 and 40,147.88

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Solution

The fourth proportional to 71,976.92, 99,328.32 and 40,147.88 is: 55,404.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.92 : 99,328.32 = 40,147.88 : x
  2. Step 2: Convert to fraction form
    71,976.92/99,328.32 = 40,147.88/x
  3. Step 3: Cross multiply
    71,976.92x = 99,328.32 × 40,147.88
  4. Step 4: Simplify right side
    71,976.92x = 3,987,820,975.32
  5. Step 5: Solve for x
    x = 3,987,820,975.32/71,976.92
  6. Step 6: Final answer
    x = 55,404.17

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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.