Home / 71,976.14-99,329.20-40,147.16

Finding the Fourth Proportional to 71,976.14, 99,329.20 and 40,147.16

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Solution

The fourth proportional to 71,976.14, 99,329.20 and 40,147.16 is: 55,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.14 : 99,329.20 = 40,147.16 : x
  2. Step 2: Convert to fraction form
    71,976.14/99,329.20 = 40,147.16/x
  3. Step 3: Cross multiply
    71,976.14x = 99,329.20 × 40,147.16
  4. Step 4: Simplify right side
    71,976.14x = 3,987,784,688.06
  5. Step 5: Solve for x
    x = 3,987,784,688.06/71,976.14
  6. Step 6: Final answer
    x = 55,404.26

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1.5x scale

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.