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Finding the Fourth Proportional to 61,103.60, 91,728.30 and 34,470.80

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Solution

The fourth proportional to 61,103.60, 91,728.30 and 34,470.80 is: 51,747.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,103.60 : 91,728.30 = 34,470.80 : x
  2. Step 2: Convert to fraction form
    61,103.60/91,728.30 = 34,470.80/x
  3. Step 3: Cross multiply
    61,103.60x = 91,728.30 × 34,470.80
  4. Step 4: Simplify right side
    61,103.60x = 3,161,947,883.64
  5. Step 5: Solve for x
    x = 3,161,947,883.64/61,103.60
  6. Step 6: Final answer
    x = 51,747.33

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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.