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Finding the Fourth Proportional to 67,929.91, 101,190.95 and 66,812.11

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Solution

The fourth proportional to 67,929.91, 101,190.95 and 66,812.11 is: 99,525.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,929.91 : 101,190.95 = 66,812.11 : x
  2. Step 2: Convert to fraction form
    67,929.91/101,190.95 = 66,812.11/x
  3. Step 3: Cross multiply
    67,929.91x = 101,190.95 × 66,812.11
  4. Step 4: Simplify right side
    67,929.91x = 6,760,780,801.32
  5. Step 5: Solve for x
    x = 6,760,780,801.32/67,929.91
  6. Step 6: Final answer
    x = 99,525.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.