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Finding the Fourth Proportional to 84,759.62, 126,984.38 and 39,698.24

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Solution

The fourth proportional to 84,759.62, 126,984.38 and 39,698.24 is: 59,474.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,759.62 : 126,984.38 = 39,698.24 : x
  2. Step 2: Convert to fraction form
    84,759.62/126,984.38 = 39,698.24/x
  3. Step 3: Cross multiply
    84,759.62x = 126,984.38 × 39,698.24
  4. Step 4: Simplify right side
    84,759.62x = 5,041,055,560.08
  5. Step 5: Solve for x
    x = 5,041,055,560.08/84,759.62
  6. Step 6: Final answer
    x = 59,474.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.