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Finding the Fourth Proportional to 75,574.80, 113,362.20 and 19,414.80

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Solution

The fourth proportional to 75,574.80, 113,362.20 and 19,414.80 is: 29,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,574.80 : 113,362.20 = 19,414.80 : x
  2. Step 2: Convert to fraction form
    75,574.80/113,362.20 = 19,414.80/x
  3. Step 3: Cross multiply
    75,574.80x = 113,362.20 × 19,414.80
  4. Step 4: Simplify right side
    75,574.80x = 2,200,904,440.56
  5. Step 5: Solve for x
    x = 2,200,904,440.56/75,574.80
  6. Step 6: Final answer
    x = 29,122.20

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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.