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Finding the Fourth Proportional to 69,426.80, 104,115.90 and 36,135.80

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Solution

The fourth proportional to 69,426.80, 104,115.90 and 36,135.80 is: 54,191.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,426.80 : 104,115.90 = 36,135.80 : x
  2. Step 2: Convert to fraction form
    69,426.80/104,115.90 = 36,135.80/x
  3. Step 3: Cross multiply
    69,426.80x = 104,115.90 × 36,135.80
  4. Step 4: Simplify right side
    69,426.80x = 3,762,311,339.22
  5. Step 5: Solve for x
    x = 3,762,311,339.22/69,426.80
  6. Step 6: Final answer
    x = 54,191.05

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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.