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Finding the Fourth Proportional to 84,866.11, 117,018.61 and 54,197.89

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Solution

The fourth proportional to 84,866.11, 117,018.61 and 54,197.89 is: 74,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,866.11 : 117,018.61 = 54,197.89 : x
  2. Step 2: Convert to fraction form
    84,866.11/117,018.61 = 54,197.89/x
  3. Step 3: Cross multiply
    84,866.11x = 117,018.61 × 54,197.89
  4. Step 4: Simplify right side
    84,866.11x = 6,342,161,752.73
  5. Step 5: Solve for x
    x = 6,342,161,752.73/84,866.11
  6. Step 6: Final answer
    x = 74,731.38

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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.