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Finding the Fourth Proportional to 69,903, 104,818.86 and 23,139

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Solution

The fourth proportional to 69,903, 104,818.86 and 23,139 is: 34,696.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,903 : 104,818.86 = 23,139 : x
  2. Step 2: Convert to fraction form
    69,903/104,818.86 = 23,139/x
  3. Step 3: Cross multiply
    69,903x = 104,818.86 × 23,139
  4. Step 4: Simplify right side
    69,903x = 2,425,403,601.54
  5. Step 5: Solve for x
    x = 2,425,403,601.54/69,903
  6. Step 6: Final answer
    x = 34,696.70

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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.