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Finding the Fourth Proportional to 86,682.80, 129,952.20 and 36,801.20

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Solution

The fourth proportional to 86,682.80, 129,952.20 and 36,801.20 is: 55,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,682.80 : 129,952.20 = 36,801.20 : x
  2. Step 2: Convert to fraction form
    86,682.80/129,952.20 = 36,801.20/x
  3. Step 3: Cross multiply
    86,682.80x = 129,952.20 × 36,801.20
  4. Step 4: Simplify right side
    86,682.80x = 4,782,396,902.64
  5. Step 5: Solve for x
    x = 4,782,396,902.64/86,682.80
  6. Step 6: Final answer
    x = 55,171.23

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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.