Home / 71,976.56-99,327.66-40,145.48

Finding the Fourth Proportional to 71,976.56, 99,327.66 and 40,145.48

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Solution

The fourth proportional to 71,976.56, 99,327.66 and 40,145.48 is: 55,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.56 : 99,327.66 = 40,145.48 : x
  2. Step 2: Convert to fraction form
    71,976.56/99,327.66 = 40,145.48/x
  3. Step 3: Cross multiply
    71,976.56x = 99,327.66 × 40,145.48
  4. Step 4: Simplify right side
    71,976.56x = 3,987,556,587.98
  5. Step 5: Solve for x
    x = 3,987,556,587.98/71,976.56
  6. Step 6: Final answer
    x = 55,400.77

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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.