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Finding the Fourth Proportional to 74,601.80, 112,311.08 and 68,069.96

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Solution

The fourth proportional to 74,601.80, 112,311.08 and 68,069.96 is: 102,477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,601.80 : 112,311.08 = 68,069.96 : x
  2. Step 2: Convert to fraction form
    74,601.80/112,311.08 = 68,069.96/x
  3. Step 3: Cross multiply
    74,601.80x = 112,311.08 × 68,069.96
  4. Step 4: Simplify right side
    74,601.80x = 7,645,010,723.16
  5. Step 5: Solve for x
    x = 7,645,010,723.16/74,601.80
  6. Step 6: Final answer
    x = 102,477.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.