Home / 82,638.20-123,966.10-26,458.22

Finding the Fourth Proportional to 82,638.20, 123,966.10 and 26,458.22

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Solution

The fourth proportional to 82,638.20, 123,966.10 and 26,458.22 is: 39,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,638.20 : 123,966.10 = 26,458.22 : x
  2. Step 2: Convert to fraction form
    82,638.20/123,966.10 = 26,458.22/x
  3. Step 3: Cross multiply
    82,638.20x = 123,966.10 × 26,458.22
  4. Step 4: Simplify right side
    82,638.20x = 3,279,922,346.34
  5. Step 5: Solve for x
    x = 3,279,922,346.34/82,638.20
  6. Step 6: Final answer
    x = 39,690.15

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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.