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Finding the Fourth Proportional to 69,097.70, 103,480.45 and 39,425.57

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Solution

The fourth proportional to 69,097.70, 103,480.45 and 39,425.57 is: 59,043.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,097.70 : 103,480.45 = 39,425.57 : x
  2. Step 2: Convert to fraction form
    69,097.70/103,480.45 = 39,425.57/x
  3. Step 3: Cross multiply
    69,097.70x = 103,480.45 × 39,425.57
  4. Step 4: Simplify right side
    69,097.70x = 4,079,775,725.11
  5. Step 5: Solve for x
    x = 4,079,775,725.11/69,097.70
  6. Step 6: Final answer
    x = 59,043.58

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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.