Home / 55,115.46-75,986.88-39,789.08

Finding the Fourth Proportional to 55,115.46, 75,986.88 and 39,789.08

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Solution

The fourth proportional to 55,115.46, 75,986.88 and 39,789.08 is: 54,856.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,115.46 : 75,986.88 = 39,789.08 : x
  2. Step 2: Convert to fraction form
    55,115.46/75,986.88 = 39,789.08/x
  3. Step 3: Cross multiply
    55,115.46x = 75,986.88 × 39,789.08
  4. Step 4: Simplify right side
    55,115.46x = 3,023,448,047.27
  5. Step 5: Solve for x
    x = 3,023,448,047.27/55,115.46
  6. Step 6: Final answer
    x = 54,856.62

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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.