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Finding the Fourth Proportional to 69,012.74, 103,520.16 and 45,471.07

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Solution

The fourth proportional to 69,012.74, 103,520.16 and 45,471.07 is: 68,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,012.74 : 103,520.16 = 45,471.07 : x
  2. Step 2: Convert to fraction form
    69,012.74/103,520.16 = 45,471.07/x
  3. Step 3: Cross multiply
    69,012.74x = 103,520.16 × 45,471.07
  4. Step 4: Simplify right side
    69,012.74x = 4,707,172,571.17
  5. Step 5: Solve for x
    x = 4,707,172,571.17/69,012.74
  6. Step 6: Final answer
    x = 68,207.30

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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.