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Finding the Fourth Proportional to 61,766.40, 92,640.96 and 20,208

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Solution

The fourth proportional to 61,766.40, 92,640.96 and 20,208 is: 30,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,766.40 : 92,640.96 = 20,208 : x
  2. Step 2: Convert to fraction form
    61,766.40/92,640.96 = 20,208/x
  3. Step 3: Cross multiply
    61,766.40x = 92,640.96 × 20,208
  4. Step 4: Simplify right side
    61,766.40x = 1,872,088,519.68
  5. Step 5: Solve for x
    x = 1,872,088,519.68/61,766.40
  6. Step 6: Final answer
    x = 30,309.17

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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.