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Finding the Fourth Proportional to 85,934.76, 128,902.14 and 26,775.21

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Solution

The fourth proportional to 85,934.76, 128,902.14 and 26,775.21 is: 40,162.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934.76 : 128,902.14 = 26,775.21 : x
  2. Step 2: Convert to fraction form
    85,934.76/128,902.14 = 26,775.21/x
  3. Step 3: Cross multiply
    85,934.76x = 128,902.14 × 26,775.21
  4. Step 4: Simplify right side
    85,934.76x = 3,451,381,867.95
  5. Step 5: Solve for x
    x = 3,451,381,867.95/85,934.76
  6. Step 6: Final answer
    x = 40,162.82

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Similar ratio
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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.