Home / 65,321.14-90,144.75-39,828.82

Finding the Fourth Proportional to 65,321.14, 90,144.75 and 39,828.82

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Solution

The fourth proportional to 65,321.14, 90,144.75 and 39,828.82 is: 54,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,321.14 : 90,144.75 = 39,828.82 : x
  2. Step 2: Convert to fraction form
    65,321.14/90,144.75 = 39,828.82/x
  3. Step 3: Cross multiply
    65,321.14x = 90,144.75 × 39,828.82
  4. Step 4: Simplify right side
    65,321.14x = 3,590,359,021.70
  5. Step 5: Solve for x
    x = 3,590,359,021.70/65,321.14
  6. Step 6: Final answer
    x = 54,964.73

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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.