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Finding the Fourth Proportional to 82,761.60, 124,142.40 and 27,357.60

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Solution

The fourth proportional to 82,761.60, 124,142.40 and 27,357.60 is: 41,036.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,761.60 : 124,142.40 = 27,357.60 : x
  2. Step 2: Convert to fraction form
    82,761.60/124,142.40 = 27,357.60/x
  3. Step 3: Cross multiply
    82,761.60x = 124,142.40 × 27,357.60
  4. Step 4: Simplify right side
    82,761.60x = 3,396,238,122.24
  5. Step 5: Solve for x
    x = 3,396,238,122.24/82,761.60
  6. Step 6: Final answer
    x = 41,036.40

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1.5x scale

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.