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Finding the Fourth Proportional to 66,992.67, 100,488.40 and 20,245.55

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Solution

The fourth proportional to 66,992.67, 100,488.40 and 20,245.55 is: 30,368.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,992.67 : 100,488.40 = 20,245.55 : x
  2. Step 2: Convert to fraction form
    66,992.67/100,488.40 = 20,245.55/x
  3. Step 3: Cross multiply
    66,992.67x = 100,488.40 × 20,245.55
  4. Step 4: Simplify right side
    66,992.67x = 2,034,442,373.56
  5. Step 5: Solve for x
    x = 2,034,442,373.56/66,992.67
  6. Step 6: Final answer
    x = 30,368.13

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1.5x scale

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.