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Finding the Fourth Proportional to 66,828.85, 92,201.10 and 38,127.89

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Solution

The fourth proportional to 66,828.85, 92,201.10 and 38,127.89 is: 52,603.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,828.85 : 92,201.10 = 38,127.89 : x
  2. Step 2: Convert to fraction form
    66,828.85/92,201.10 = 38,127.89/x
  3. Step 3: Cross multiply
    66,828.85x = 92,201.10 × 38,127.89
  4. Step 4: Simplify right side
    66,828.85x = 3,515,433,398.68
  5. Step 5: Solve for x
    x = 3,515,433,398.68/66,828.85
  6. Step 6: Final answer
    x = 52,603.53

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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.