Home / 71,976.55-99,327.39-40,145.42

Finding the Fourth Proportional to 71,976.55, 99,327.39 and 40,145.42

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Solution

The fourth proportional to 71,976.55, 99,327.39 and 40,145.42 is: 55,400.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.55 : 99,327.39 = 40,145.42 : x
  2. Step 2: Convert to fraction form
    71,976.55/99,327.39 = 40,145.42/x
  3. Step 3: Cross multiply
    71,976.55x = 99,327.39 × 40,145.42
  4. Step 4: Simplify right side
    71,976.55x = 3,987,539,999.74
  5. Step 5: Solve for x
    x = 3,987,539,999.74/71,976.55
  6. Step 6: Final answer
    x = 55,400.54

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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.