Home / 81,860.20-122,790.30-26,456.20

Finding the Fourth Proportional to 81,860.20, 122,790.30 and 26,456.20

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Solution

The fourth proportional to 81,860.20, 122,790.30 and 26,456.20 is: 39,684.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,860.20 : 122,790.30 = 26,456.20 : x
  2. Step 2: Convert to fraction form
    81,860.20/122,790.30 = 26,456.20/x
  3. Step 3: Cross multiply
    81,860.20x = 122,790.30 × 26,456.20
  4. Step 4: Simplify right side
    81,860.20x = 3,248,564,734.86
  5. Step 5: Solve for x
    x = 3,248,564,734.86/81,860.20
  6. Step 6: Final answer
    x = 39,684.30

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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.