Home / 51,455.44-77,138.79-19,887.65

Finding the Fourth Proportional to 51,455.44, 77,138.79 and 19,887.65

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Solution

The fourth proportional to 51,455.44, 77,138.79 and 19,887.65 is: 29,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,455.44 : 77,138.79 = 19,887.65 : x
  2. Step 2: Convert to fraction form
    51,455.44/77,138.79 = 19,887.65/x
  3. Step 3: Cross multiply
    51,455.44x = 77,138.79 × 19,887.65
  4. Step 4: Simplify right side
    51,455.44x = 1,534,109,256.94
  5. Step 5: Solve for x
    x = 1,534,109,256.94/51,455.44
  6. Step 6: Final answer
    x = 29,814.33

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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.