Home / 66,144.97-99,231.12-21,774.38

Finding the Fourth Proportional to 66,144.97, 99,231.12 and 21,774.38

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Solution

The fourth proportional to 66,144.97, 99,231.12 and 21,774.38 is: 32,666.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,144.97 : 99,231.12 = 21,774.38 : x
  2. Step 2: Convert to fraction form
    66,144.97/99,231.12 = 21,774.38/x
  3. Step 3: Cross multiply
    66,144.97x = 99,231.12 × 21,774.38
  4. Step 4: Simplify right side
    66,144.97x = 2,160,696,060.27
  5. Step 5: Solve for x
    x = 2,160,696,060.27/66,144.97
  6. Step 6: Final answer
    x = 32,666.07

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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.