Home / 82,638.18-123,966.10-26,458.20

Finding the Fourth Proportional to 82,638.18, 123,966.10 and 26,458.20

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Solution

The fourth proportional to 82,638.18, 123,966.10 and 26,458.20 is: 39,690.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,638.18 : 123,966.10 = 26,458.20 : x
  2. Step 2: Convert to fraction form
    82,638.18/123,966.10 = 26,458.20/x
  3. Step 3: Cross multiply
    82,638.18x = 123,966.10 × 26,458.20
  4. Step 4: Simplify right side
    82,638.18x = 3,279,919,867.02
  5. Step 5: Solve for x
    x = 3,279,919,867.02/82,638.18
  6. Step 6: Final answer
    x = 39,690.13

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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.