Home / 86,120.21-129,155.21-33,517.19

Finding the Fourth Proportional to 86,120.21, 129,155.21 and 33,517.19

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Solution

The fourth proportional to 86,120.21, 129,155.21 and 33,517.19 is: 50,266.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.21 : 129,155.21 = 33,517.19 : x
  2. Step 2: Convert to fraction form
    86,120.21/129,155.21 = 33,517.19/x
  3. Step 3: Cross multiply
    86,120.21x = 129,155.21 × 33,517.19
  4. Step 4: Simplify right side
    86,120.21x = 4,328,919,545.47
  5. Step 5: Solve for x
    x = 4,328,919,545.47/86,120.21
  6. Step 6: Final answer
    x = 50,266.01

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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.