Home / 74,965.20-112,375.80-43,342.80

Finding the Fourth Proportional to 74,965.20, 112,375.80 and 43,342.80

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Solution

The fourth proportional to 74,965.20, 112,375.80 and 43,342.80 is: 64,972.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,965.20 : 112,375.80 = 43,342.80 : x
  2. Step 2: Convert to fraction form
    74,965.20/112,375.80 = 43,342.80/x
  3. Step 3: Cross multiply
    74,965.20x = 112,375.80 × 43,342.80
  4. Step 4: Simplify right side
    74,965.20x = 4,870,681,824.24
  5. Step 5: Solve for x
    x = 4,870,681,824.24/74,965.20
  6. Step 6: Final answer
    x = 64,972.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.