Home / 51,238.69-76,872.89-21,247.36

Finding the Fourth Proportional to 51,238.69, 76,872.89 and 21,247.36

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Solution

The fourth proportional to 51,238.69, 76,872.89 and 21,247.36 is: 31,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,238.69 : 76,872.89 = 21,247.36 : x
  2. Step 2: Convert to fraction form
    51,238.69/76,872.89 = 21,247.36/x
  3. Step 3: Cross multiply
    51,238.69x = 76,872.89 × 21,247.36
  4. Step 4: Simplify right side
    51,238.69x = 1,633,345,968.07
  5. Step 5: Solve for x
    x = 1,633,345,968.07/51,238.69
  6. Step 6: Final answer
    x = 31,877.20

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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.