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Finding the Fourth Proportional to 71,044.80, 106,624.80 and 68,740.80

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Solution

The fourth proportional to 71,044.80, 106,624.80 and 68,740.80 is: 103,166.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,044.80 : 106,624.80 = 68,740.80 : x
  2. Step 2: Convert to fraction form
    71,044.80/106,624.80 = 68,740.80/x
  3. Step 3: Cross multiply
    71,044.80x = 106,624.80 × 68,740.80
  4. Step 4: Simplify right side
    71,044.80x = 7,329,474,051.84
  5. Step 5: Solve for x
    x = 7,329,474,051.84/71,044.80
  6. Step 6: Final answer
    x = 103,166.93

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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.