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Finding the Fourth Proportional to 86,363.55, 129,563.55 and 27,205.20

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Solution

The fourth proportional to 86,363.55, 129,563.55 and 27,205.20 is: 40,813.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,363.55 : 129,563.55 = 27,205.20 : x
  2. Step 2: Convert to fraction form
    86,363.55/129,563.55 = 27,205.20/x
  3. Step 3: Cross multiply
    86,363.55x = 129,563.55 × 27,205.20
  4. Step 4: Simplify right side
    86,363.55x = 3,524,802,290.46
  5. Step 5: Solve for x
    x = 3,524,802,290.46/86,363.55
  6. Step 6: Final answer
    x = 40,813.54

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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.