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Finding the Fourth Proportional to 85,471.44, 128,205.76 and 32,892.32

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Solution

The fourth proportional to 85,471.44, 128,205.76 and 32,892.32 is: 49,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,471.44 : 128,205.76 = 32,892.32 : x
  2. Step 2: Convert to fraction form
    85,471.44/128,205.76 = 32,892.32/x
  3. Step 3: Cross multiply
    85,471.44x = 128,205.76 × 32,892.32
  4. Step 4: Simplify right side
    85,471.44x = 4,216,984,883.76
  5. Step 5: Solve for x
    x = 4,216,984,883.76/85,471.44
  6. Step 6: Final answer
    x = 49,337.94

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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.