Home / 66,145.97-99,232.62-21,775.38

Finding the Fourth Proportional to 66,145.97, 99,232.62 and 21,775.38

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Solution

The fourth proportional to 66,145.97, 99,232.62 and 21,775.38 is: 32,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.97 : 99,232.62 = 21,775.38 : x
  2. Step 2: Convert to fraction form
    66,145.97/99,232.62 = 21,775.38/x
  3. Step 3: Cross multiply
    66,145.97x = 99,232.62 × 21,775.38
  4. Step 4: Simplify right side
    66,145.97x = 2,160,828,008.90
  5. Step 5: Solve for x
    x = 2,160,828,008.90/66,145.97
  6. Step 6: Final answer
    x = 32,667.57

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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.