Home / 72,540.43-100,101.31-40,273.18

Finding the Fourth Proportional to 72,540.43, 100,101.31 and 40,273.18

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Solution

The fourth proportional to 72,540.43, 100,101.31 and 40,273.18 is: 55,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,540.43 : 100,101.31 = 40,273.18 : x
  2. Step 2: Convert to fraction form
    72,540.43/100,101.31 = 40,273.18/x
  3. Step 3: Cross multiply
    72,540.43x = 100,101.31 × 40,273.18
  4. Step 4: Simplify right side
    72,540.43x = 4,031,397,724.93
  5. Step 5: Solve for x
    x = 4,031,397,724.93/72,540.43
  6. Step 6: Final answer
    x = 55,574.50

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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.