Home / 66,291.28-99,436.88-54,579.88

Finding the Fourth Proportional to 66,291.28, 99,436.88 and 54,579.88

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Solution

The fourth proportional to 66,291.28, 99,436.88 and 54,579.88 is: 81,869.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,291.28 : 99,436.88 = 54,579.88 : x
  2. Step 2: Convert to fraction form
    66,291.28/99,436.88 = 54,579.88/x
  3. Step 3: Cross multiply
    66,291.28x = 99,436.88 × 54,579.88
  4. Step 4: Simplify right side
    66,291.28x = 5,427,252,977.97
  5. Step 5: Solve for x
    x = 5,427,252,977.97/66,291.28
  6. Step 6: Final answer
    x = 81,869.79

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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.