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Finding the Fourth Proportional to 67,992.17, 102,006.71 and 20,605.34

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Solution

The fourth proportional to 67,992.17, 102,006.71 and 20,605.34 is: 30,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,992.17 : 102,006.71 = 20,605.34 : x
  2. Step 2: Convert to fraction form
    67,992.17/102,006.71 = 20,605.34/x
  3. Step 3: Cross multiply
    67,992.17x = 102,006.71 × 20,605.34
  4. Step 4: Simplify right side
    67,992.17x = 2,101,883,093.82
  5. Step 5: Solve for x
    x = 2,101,883,093.82/67,992.17
  6. Step 6: Final answer
    x = 30,913.61

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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.