Home / 66,593.28-99,825.12-54,138.72

Finding the Fourth Proportional to 66,593.28, 99,825.12 and 54,138.72

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Solution

The fourth proportional to 66,593.28, 99,825.12 and 54,138.72 is: 81,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,593.28 : 99,825.12 = 54,138.72 : x
  2. Step 2: Convert to fraction form
    66,593.28/99,825.12 = 54,138.72/x
  3. Step 3: Cross multiply
    66,593.28x = 99,825.12 × 54,138.72
  4. Step 4: Simplify right side
    66,593.28x = 5,404,404,220.65
  5. Step 5: Solve for x
    x = 5,404,404,220.65/66,593.28
  6. Step 6: Final answer
    x = 81,155.40

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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.