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Finding the Fourth Proportional to 85,523.55, 128,232.01 and 32,920.73

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Solution

The fourth proportional to 85,523.55, 128,232.01 and 32,920.73 is: 49,360.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,523.55 : 128,232.01 = 32,920.73 : x
  2. Step 2: Convert to fraction form
    85,523.55/128,232.01 = 32,920.73/x
  3. Step 3: Cross multiply
    85,523.55x = 128,232.01 × 32,920.73
  4. Step 4: Simplify right side
    85,523.55x = 4,221,491,259.43
  5. Step 5: Solve for x
    x = 4,221,491,259.43/85,523.55
  6. Step 6: Final answer
    x = 49,360.57

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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.