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Finding the Fourth Proportional to 66,878.80, 92,302.13 and 41,393.33

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Solution

The fourth proportional to 66,878.80, 92,302.13 and 41,393.33 is: 57,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,878.80 : 92,302.13 = 41,393.33 : x
  2. Step 2: Convert to fraction form
    66,878.80/92,302.13 = 41,393.33/x
  3. Step 3: Cross multiply
    66,878.80x = 92,302.13 × 41,393.33
  4. Step 4: Simplify right side
    66,878.80x = 3,820,692,514.90
  5. Step 5: Solve for x
    x = 3,820,692,514.90/66,878.80
  6. Step 6: Final answer
    x = 57,128.61

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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.