Home / 66,105.09-99,147.30-21,731.52

Finding the Fourth Proportional to 66,105.09, 99,147.30 and 21,731.52

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Solution

The fourth proportional to 66,105.09, 99,147.30 and 21,731.52 is: 32,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,105.09 : 99,147.30 = 21,731.52 : x
  2. Step 2: Convert to fraction form
    66,105.09/99,147.30 = 21,731.52/x
  3. Step 3: Cross multiply
    66,105.09x = 99,147.30 × 21,731.52
  4. Step 4: Simplify right side
    66,105.09x = 2,154,621,532.90
  5. Step 5: Solve for x
    x = 2,154,621,532.90/66,105.09
  6. Step 6: Final answer
    x = 32,593.88

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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.