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Finding the Fourth Proportional to 62,677.92, 94,029.84 and 21,128.16

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Solution

The fourth proportional to 62,677.92, 94,029.84 and 21,128.16 is: 31,696.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,677.92 : 94,029.84 = 21,128.16 : x
  2. Step 2: Convert to fraction form
    62,677.92/94,029.84 = 21,128.16/x
  3. Step 3: Cross multiply
    62,677.92x = 94,029.84 × 21,128.16
  4. Step 4: Simplify right side
    62,677.92x = 1,986,677,504.29
  5. Step 5: Solve for x
    x = 1,986,677,504.29/62,677.92
  6. Step 6: Final answer
    x = 31,696.61

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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.