Home / 65,346.14-90,163.74-38,478.84

Finding the Fourth Proportional to 65,346.14, 90,163.74 and 38,478.84

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Solution

The fourth proportional to 65,346.14, 90,163.74 and 38,478.84 is: 53,092.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,346.14 : 90,163.74 = 38,478.84 : x
  2. Step 2: Convert to fraction form
    65,346.14/90,163.74 = 38,478.84/x
  3. Step 3: Cross multiply
    65,346.14x = 90,163.74 × 38,478.84
  4. Step 4: Simplify right side
    65,346.14x = 3,469,396,125.26
  5. Step 5: Solve for x
    x = 3,469,396,125.26/65,346.14
  6. Step 6: Final answer
    x = 53,092.59

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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.