Home / 86,571.20-129,862.56-30,404.48

Finding the Fourth Proportional to 86,571.20, 129,862.56 and 30,404.48

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Solution

The fourth proportional to 86,571.20, 129,862.56 and 30,404.48 is: 45,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,571.20 : 129,862.56 = 30,404.48 : x
  2. Step 2: Convert to fraction form
    86,571.20/129,862.56 = 30,404.48/x
  3. Step 3: Cross multiply
    86,571.20x = 129,862.56 × 30,404.48
  4. Step 4: Simplify right side
    86,571.20x = 3,948,403,608.27
  5. Step 5: Solve for x
    x = 3,948,403,608.27/86,571.20
  6. Step 6: Final answer
    x = 45,608.74

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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.