Home / 66,659.20-99,990.60-29,200

Finding the Fourth Proportional to 66,659.20, 99,990.60 and 29,200

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Solution

The fourth proportional to 66,659.20, 99,990.60 and 29,200 is: 43,800.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,659.20 : 99,990.60 = 29,200 : x
  2. Step 2: Convert to fraction form
    66,659.20/99,990.60 = 29,200/x
  3. Step 3: Cross multiply
    66,659.20x = 99,990.60 × 29,200
  4. Step 4: Simplify right side
    66,659.20x = 2,919,725,520
  5. Step 5: Solve for x
    x = 2,919,725,520/66,659.20
  6. Step 6: Final answer
    x = 43,800.79

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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.