Home / 39,905.31-55,069.29-22,000.61

Finding the Fourth Proportional to 39,905.31, 55,069.29 and 22,000.61

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Solution

The fourth proportional to 39,905.31, 55,069.29 and 22,000.61 is: 30,360.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,905.31 : 55,069.29 = 22,000.61 : x
  2. Step 2: Convert to fraction form
    39,905.31/55,069.29 = 22,000.61/x
  3. Step 3: Cross multiply
    39,905.31x = 55,069.29 × 22,000.61
  4. Step 4: Simplify right side
    39,905.31x = 1,211,558,171.82
  5. Step 5: Solve for x
    x = 1,211,558,171.82/39,905.31
  6. Step 6: Final answer
    x = 30,360.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.