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Finding the Fourth Proportional to 77,379.84, 106,512.17 and 67,797.14

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Solution

The fourth proportional to 77,379.84, 106,512.17 and 67,797.14 is: 93,321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,379.84 : 106,512.17 = 67,797.14 : x
  2. Step 2: Convert to fraction form
    77,379.84/106,512.17 = 67,797.14/x
  3. Step 3: Cross multiply
    77,379.84x = 106,512.17 × 67,797.14
  4. Step 4: Simplify right side
    77,379.84x = 7,221,219,629.65
  5. Step 5: Solve for x
    x = 7,221,219,629.65/77,379.84
  6. Step 6: Final answer
    x = 93,321.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.