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Finding the Fourth Proportional to 78,907.79, 108,891.07 and 43,097.95

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Solution

The fourth proportional to 78,907.79, 108,891.07 and 43,097.95 is: 59,474.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,907.79 : 108,891.07 = 43,097.95 : x
  2. Step 2: Convert to fraction form
    78,907.79/108,891.07 = 43,097.95/x
  3. Step 3: Cross multiply
    78,907.79x = 108,891.07 × 43,097.95
  4. Step 4: Simplify right side
    78,907.79x = 4,692,981,890.31
  5. Step 5: Solve for x
    x = 4,692,981,890.31/78,907.79
  6. Step 6: Final answer
    x = 59,474.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.