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Finding the Fourth Proportional to 82,865.90, 114,422.40 and 67,554.87

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Solution

The fourth proportional to 82,865.90, 114,422.40 and 67,554.87 is: 93,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,865.90 : 114,422.40 = 67,554.87 : x
  2. Step 2: Convert to fraction form
    82,865.90/114,422.40 = 67,554.87/x
  3. Step 3: Cross multiply
    82,865.90x = 114,422.40 × 67,554.87
  4. Step 4: Simplify right side
    82,865.90x = 7,729,790,357.09
  5. Step 5: Solve for x
    x = 7,729,790,357.09/82,865.90
  6. Step 6: Final answer
    x = 93,280.72

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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.