Home / 38,659.11-53,456.94-30,687.50

Finding the Fourth Proportional to 38,659.11, 53,456.94 and 30,687.50

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Solution

The fourth proportional to 38,659.11, 53,456.94 and 30,687.50 is: 42,433.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,659.11 : 53,456.94 = 30,687.50 : x
  2. Step 2: Convert to fraction form
    38,659.11/53,456.94 = 30,687.50/x
  3. Step 3: Cross multiply
    38,659.11x = 53,456.94 × 30,687.50
  4. Step 4: Simplify right side
    38,659.11x = 1,640,459,578.97
  5. Step 5: Solve for x
    x = 1,640,459,578.97/38,659.11
  6. Step 6: Final answer
    x = 42,433.97

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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.