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Finding the Fourth Proportional to 56,836.80, 85,280.80 and 27,243.20

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Solution

The fourth proportional to 56,836.80, 85,280.80 and 27,243.20 is: 40,877.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,836.80 : 85,280.80 = 27,243.20 : x
  2. Step 2: Convert to fraction form
    56,836.80/85,280.80 = 27,243.20/x
  3. Step 3: Cross multiply
    56,836.80x = 85,280.80 × 27,243.20
  4. Step 4: Simplify right side
    56,836.80x = 2,323,321,890.56
  5. Step 5: Solve for x
    x = 2,323,321,890.56/56,836.80
  6. Step 6: Final answer
    x = 40,877.07

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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.