Home / 66,221.38-91,387.45-36,006.66

Finding the Fourth Proportional to 66,221.38, 91,387.45 and 36,006.66

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Solution

The fourth proportional to 66,221.38, 91,387.45 and 36,006.66 is: 49,690.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,221.38 : 91,387.45 = 36,006.66 : x
  2. Step 2: Convert to fraction form
    66,221.38/91,387.45 = 36,006.66/x
  3. Step 3: Cross multiply
    66,221.38x = 91,387.45 × 36,006.66
  4. Step 4: Simplify right side
    66,221.38x = 3,290,556,840.42
  5. Step 5: Solve for x
    x = 3,290,556,840.42/66,221.38
  6. Step 6: Final answer
    x = 49,690.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.