Home / 51,243.20-76,864.80-21,653.36

Finding the Fourth Proportional to 51,243.20, 76,864.80 and 21,653.36

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Solution

The fourth proportional to 51,243.20, 76,864.80 and 21,653.36 is: 32,480.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,243.20 : 76,864.80 = 21,653.36 : x
  2. Step 2: Convert to fraction form
    51,243.20/76,864.80 = 21,653.36/x
  3. Step 3: Cross multiply
    51,243.20x = 76,864.80 × 21,653.36
  4. Step 4: Simplify right side
    51,243.20x = 1,664,381,185.73
  5. Step 5: Solve for x
    x = 1,664,381,185.73/51,243.20
  6. Step 6: Final answer
    x = 32,480.04

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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.