Home / 85,995.38-128,998.75-22,814.61

Finding the Fourth Proportional to 85,995.38, 128,998.75 and 22,814.61

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Solution

The fourth proportional to 85,995.38, 128,998.75 and 22,814.61 is: 34,223.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,995.38 : 128,998.75 = 22,814.61 : x
  2. Step 2: Convert to fraction form
    85,995.38/128,998.75 = 22,814.61/x
  3. Step 3: Cross multiply
    85,995.38x = 128,998.75 × 22,814.61
  4. Step 4: Simplify right side
    85,995.38x = 2,943,056,171.74
  5. Step 5: Solve for x
    x = 2,943,056,171.74/85,995.38
  6. Step 6: Final answer
    x = 34,223.42

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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.