Home / 66,880.20-100,319.29-16,279.61

Finding the Fourth Proportional to 66,880.20, 100,319.29 and 16,279.61

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Solution

The fourth proportional to 66,880.20, 100,319.29 and 16,279.61 is: 24,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,880.20 : 100,319.29 = 16,279.61 : x
  2. Step 2: Convert to fraction form
    66,880.20/100,319.29 = 16,279.61/x
  3. Step 3: Cross multiply
    66,880.20x = 100,319.29 × 16,279.61
  4. Step 4: Simplify right side
    66,880.20x = 1,633,158,374.38
  5. Step 5: Solve for x
    x = 1,633,158,374.38/66,880.20
  6. Step 6: Final answer
    x = 24,419.16

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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.