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Finding the Fourth Proportional to 61,392.80, 84,671.52 and 36,218

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Solution

The fourth proportional to 61,392.80, 84,671.52 and 36,218 is: 49,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,392.80 : 84,671.52 = 36,218 : x
  2. Step 2: Convert to fraction form
    61,392.80/84,671.52 = 36,218/x
  3. Step 3: Cross multiply
    61,392.80x = 84,671.52 × 36,218
  4. Step 4: Simplify right side
    61,392.80x = 3,066,633,111.36
  5. Step 5: Solve for x
    x = 3,066,633,111.36/61,392.80
  6. Step 6: Final answer
    x = 49,951.02

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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.