Home / 72,750.82-100,388-40,919.04

Finding the Fourth Proportional to 72,750.82, 100,388 and 40,919.04

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Solution

The fourth proportional to 72,750.82, 100,388 and 40,919.04 is: 56,463.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,750.82 : 100,388 = 40,919.04 : x
  2. Step 2: Convert to fraction form
    72,750.82/100,388 = 40,919.04/x
  3. Step 3: Cross multiply
    72,750.82x = 100,388 × 40,919.04
  4. Step 4: Simplify right side
    72,750.82x = 4,107,780,587.52
  5. Step 5: Solve for x
    x = 4,107,780,587.52/72,750.82
  6. Step 6: Final answer
    x = 56,463.70

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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.