Home / 72,617.47-100,211.87-40,351.95

Finding the Fourth Proportional to 72,617.47, 100,211.87 and 40,351.95

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Solution

The fourth proportional to 72,617.47, 100,211.87 and 40,351.95 is: 55,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617.47 : 100,211.87 = 40,351.95 : x
  2. Step 2: Convert to fraction form
    72,617.47/100,211.87 = 40,351.95/x
  3. Step 3: Cross multiply
    72,617.47x = 100,211.87 × 40,351.95
  4. Step 4: Simplify right side
    72,617.47x = 4,043,744,367.65
  5. Step 5: Solve for x
    x = 4,043,744,367.65/72,617.47
  6. Step 6: Final answer
    x = 55,685.56

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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.