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Finding the Fourth Proportional to 71,668.45, 107,400.58 and 52,800.10

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Solution

The fourth proportional to 71,668.45, 107,400.58 and 52,800.10 is: 79,124.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,668.45 : 107,400.58 = 52,800.10 : x
  2. Step 2: Convert to fraction form
    71,668.45/107,400.58 = 52,800.10/x
  3. Step 3: Cross multiply
    71,668.45x = 107,400.58 × 52,800.10
  4. Step 4: Simplify right side
    71,668.45x = 5,670,761,864.69
  5. Step 5: Solve for x
    x = 5,670,761,864.69/71,668.45
  6. Step 6: Final answer
    x = 79,124.95

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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.