Home / 66,198.40-99,287.34-18,815.69

Finding the Fourth Proportional to 66,198.40, 99,287.34 and 18,815.69

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Solution

The fourth proportional to 66,198.40, 99,287.34 and 18,815.69 is: 28,220.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,198.40 : 99,287.34 = 18,815.69 : x
  2. Step 2: Convert to fraction form
    66,198.40/99,287.34 = 18,815.69/x
  3. Step 3: Cross multiply
    66,198.40x = 99,287.34 × 18,815.69
  4. Step 4: Simplify right side
    66,198.40x = 1,868,159,988.02
  5. Step 5: Solve for x
    x = 1,868,159,988.02/66,198.40
  6. Step 6: Final answer
    x = 28,220.62

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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.