Home / 86,273.80-129,366.94-39,486.60

Finding the Fourth Proportional to 86,273.80, 129,366.94 and 39,486.60

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Solution

The fourth proportional to 86,273.80, 129,366.94 and 39,486.60 is: 59,209.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,273.80 : 129,366.94 = 39,486.60 : x
  2. Step 2: Convert to fraction form
    86,273.80/129,366.94 = 39,486.60/x
  3. Step 3: Cross multiply
    86,273.80x = 129,366.94 × 39,486.60
  4. Step 4: Simplify right side
    86,273.80x = 5,108,260,613.00
  5. Step 5: Solve for x
    x = 5,108,260,613.00/86,273.80
  6. Step 6: Final answer
    x = 59,209.87

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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.