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Finding the Fourth Proportional to 78,758.66, 118,121.88 and 22,583.72

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Solution

The fourth proportional to 78,758.66, 118,121.88 and 22,583.72 is: 33,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,758.66 : 118,121.88 = 22,583.72 : x
  2. Step 2: Convert to fraction form
    78,758.66/118,121.88 = 22,583.72/x
  3. Step 3: Cross multiply
    78,758.66x = 118,121.88 × 22,583.72
  4. Step 4: Simplify right side
    78,758.66x = 2,667,631,463.79
  5. Step 5: Solve for x
    x = 2,667,631,463.79/78,758.66
  6. Step 6: Final answer
    x = 33,870.96

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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.