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Finding the Fourth Proportional to 69,098.70, 103,481.95 and 39,426.57

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Solution

The fourth proportional to 69,098.70, 103,481.95 and 39,426.57 is: 59,045.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,098.70 : 103,481.95 = 39,426.57 : x
  2. Step 2: Convert to fraction form
    69,098.70/103,481.95 = 39,426.57/x
  3. Step 3: Cross multiply
    69,098.70x = 103,481.95 × 39,426.57
  4. Step 4: Simplify right side
    69,098.70x = 4,079,938,345.41
  5. Step 5: Solve for x
    x = 4,079,938,345.41/69,098.70
  6. Step 6: Final answer
    x = 59,045.08

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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.