Home / 51,467.12-77,237.60-21,905.72

Finding the Fourth Proportional to 51,467.12, 77,237.60 and 21,905.72

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Solution

The fourth proportional to 51,467.12, 77,237.60 and 21,905.72 is: 32,874.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,467.12 : 77,237.60 = 21,905.72 : x
  2. Step 2: Convert to fraction form
    51,467.12/77,237.60 = 21,905.72/x
  3. Step 3: Cross multiply
    51,467.12x = 77,237.60 × 21,905.72
  4. Step 4: Simplify right side
    51,467.12x = 1,691,945,239.07
  5. Step 5: Solve for x
    x = 1,691,945,239.07/51,467.12
  6. Step 6: Final answer
    x = 32,874.29

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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.