Home / 72,646.20-100,251.68-40,379.82

Finding the Fourth Proportional to 72,646.20, 100,251.68 and 40,379.82

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Solution

The fourth proportional to 72,646.20, 100,251.68 and 40,379.82 is: 55,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,646.20 : 100,251.68 = 40,379.82 : x
  2. Step 2: Convert to fraction form
    72,646.20/100,251.68 = 40,379.82/x
  3. Step 3: Cross multiply
    72,646.20x = 100,251.68 × 40,379.82
  4. Step 4: Simplify right side
    72,646.20x = 4,048,144,215.25
  5. Step 5: Solve for x
    x = 4,048,144,215.25/72,646.20
  6. Step 6: Final answer
    x = 55,724.10

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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.