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Finding the Fourth Proportional to 69,145.59, 103,713.53 and 39,470.43

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Solution

The fourth proportional to 69,145.59, 103,713.53 and 39,470.43 is: 59,202.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,145.59 : 103,713.53 = 39,470.43 : x
  2. Step 2: Convert to fraction form
    69,145.59/103,713.53 = 39,470.43/x
  3. Step 3: Cross multiply
    69,145.59x = 103,713.53 × 39,470.43
  4. Step 4: Simplify right side
    69,145.59x = 4,093,617,428.57
  5. Step 5: Solve for x
    x = 4,093,617,428.57/69,145.59
  6. Step 6: Final answer
    x = 59,202.87

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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.