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Finding the Fourth Proportional to 82,987.80, 124,481.62 and 26,836.30

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Solution

The fourth proportional to 82,987.80, 124,481.62 and 26,836.30 is: 40,254.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,987.80 : 124,481.62 = 26,836.30 : x
  2. Step 2: Convert to fraction form
    82,987.80/124,481.62 = 26,836.30/x
  3. Step 3: Cross multiply
    82,987.80x = 124,481.62 × 26,836.30
  4. Step 4: Simplify right side
    82,987.80x = 3,340,626,098.81
  5. Step 5: Solve for x
    x = 3,340,626,098.81/82,987.80
  6. Step 6: Final answer
    x = 40,254.42

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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.