Home / 65,747.91-90,733.74-39,906.75

Finding the Fourth Proportional to 65,747.91, 90,733.74 and 39,906.75

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Solution

The fourth proportional to 65,747.91, 90,733.74 and 39,906.75 is: 55,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,747.91 : 90,733.74 = 39,906.75 : x
  2. Step 2: Convert to fraction form
    65,747.91/90,733.74 = 39,906.75/x
  3. Step 3: Cross multiply
    65,747.91x = 90,733.74 × 39,906.75
  4. Step 4: Simplify right side
    65,747.91x = 3,620,888,678.75
  5. Step 5: Solve for x
    x = 3,620,888,678.75/65,747.91
  6. Step 6: Final answer
    x = 55,072.30

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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.