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Finding the Fourth Proportional to 68,292.77, 102,454.20 and 20,908.22

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Solution

The fourth proportional to 68,292.77, 102,454.20 and 20,908.22 is: 31,366.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,292.77 : 102,454.20 = 20,908.22 : x
  2. Step 2: Convert to fraction form
    68,292.77/102,454.20 = 20,908.22/x
  3. Step 3: Cross multiply
    68,292.77x = 102,454.20 × 20,908.22
  4. Step 4: Simplify right side
    68,292.77x = 2,142,134,441.25
  5. Step 5: Solve for x
    x = 2,142,134,441.25/68,292.77
  6. Step 6: Final answer
    x = 31,366.93

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1.5x scale

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.