Home / 65,187.47-89,960.09-39,694.92

Finding the Fourth Proportional to 65,187.47, 89,960.09 and 39,694.92

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Solution

The fourth proportional to 65,187.47, 89,960.09 and 39,694.92 is: 54,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,187.47 : 89,960.09 = 39,694.92 : x
  2. Step 2: Convert to fraction form
    65,187.47/89,960.09 = 39,694.92/x
  3. Step 3: Cross multiply
    65,187.47x = 89,960.09 × 39,694.92
  4. Step 4: Simplify right side
    65,187.47x = 3,570,958,377.27
  5. Step 5: Solve for x
    x = 3,570,958,377.27/65,187.47
  6. Step 6: Final answer
    x = 54,779.83

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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.