Home / 66,147.12-99,221.36-19,400.88

Finding the Fourth Proportional to 66,147.12, 99,221.36 and 19,400.88

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Solution

The fourth proportional to 66,147.12, 99,221.36 and 19,400.88 is: 29,101.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,147.12 : 99,221.36 = 19,400.88 : x
  2. Step 2: Convert to fraction form
    66,147.12/99,221.36 = 19,400.88/x
  3. Step 3: Cross multiply
    66,147.12x = 99,221.36 × 19,400.88
  4. Step 4: Simplify right side
    66,147.12x = 1,924,981,698.80
  5. Step 5: Solve for x
    x = 1,924,981,698.80/66,147.12
  6. Step 6: Final answer
    x = 29,101.52

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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.