Home / 72,182.32-99,613.86-40,351.08

Finding the Fourth Proportional to 72,182.32, 99,613.86 and 40,351.08

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Solution

The fourth proportional to 72,182.32, 99,613.86 and 40,351.08 is: 55,685.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,182.32 : 99,613.86 = 40,351.08 : x
  2. Step 2: Convert to fraction form
    72,182.32/99,613.86 = 40,351.08/x
  3. Step 3: Cross multiply
    72,182.32x = 99,613.86 × 40,351.08
  4. Step 4: Simplify right side
    72,182.32x = 4,019,526,833.97
  5. Step 5: Solve for x
    x = 4,019,526,833.97/72,182.32
  6. Step 6: Final answer
    x = 55,685.75

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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.