Home / 66,488.11-91,787.38-51,346.78

Finding the Fourth Proportional to 66,488.11, 91,787.38 and 51,346.78

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Solution

The fourth proportional to 66,488.11, 91,787.38 and 51,346.78 is: 70,884.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,488.11 : 91,787.38 = 51,346.78 : x
  2. Step 2: Convert to fraction form
    66,488.11/91,787.38 = 51,346.78/x
  3. Step 3: Cross multiply
    66,488.11x = 91,787.38 × 51,346.78
  4. Step 4: Simplify right side
    66,488.11x = 4,712,986,049.80
  5. Step 5: Solve for x
    x = 4,712,986,049.80/66,488.11
  6. Step 6: Final answer
    x = 70,884.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.