Home / 85,321.33-128,000.66-26,161.61

Finding the Fourth Proportional to 85,321.33, 128,000.66 and 26,161.61

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Solution

The fourth proportional to 85,321.33, 128,000.66 and 26,161.61 is: 39,248.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,321.33 : 128,000.66 = 26,161.61 : x
  2. Step 2: Convert to fraction form
    85,321.33/128,000.66 = 26,161.61/x
  3. Step 3: Cross multiply
    85,321.33x = 128,000.66 × 26,161.61
  4. Step 4: Simplify right side
    85,321.33x = 3,348,702,575.85
  5. Step 5: Solve for x
    x = 3,348,702,575.85/85,321.33
  6. Step 6: Final answer
    x = 39,248.13

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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.