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Finding the Fourth Proportional to 85,674.92, 128,508.50 and 22,493.55

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Solution

The fourth proportional to 85,674.92, 128,508.50 and 22,493.55 is: 33,739.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,674.92 : 128,508.50 = 22,493.55 : x
  2. Step 2: Convert to fraction form
    85,674.92/128,508.50 = 22,493.55/x
  3. Step 3: Cross multiply
    85,674.92x = 128,508.50 × 22,493.55
  4. Step 4: Simplify right side
    85,674.92x = 2,890,612,122.19
  5. Step 5: Solve for x
    x = 2,890,612,122.19/85,674.92
  6. Step 6: Final answer
    x = 33,739.31

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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.