Home / 51,307.78-76,969.36-18,021.97

Finding the Fourth Proportional to 51,307.78, 76,969.36 and 18,021.97

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Solution

The fourth proportional to 51,307.78, 76,969.36 and 18,021.97 is: 27,035.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,307.78 : 76,969.36 = 18,021.97 : x
  2. Step 2: Convert to fraction form
    51,307.78/76,969.36 = 18,021.97/x
  3. Step 3: Cross multiply
    51,307.78x = 76,969.36 × 18,021.97
  4. Step 4: Simplify right side
    51,307.78x = 1,387,139,644.21
  5. Step 5: Solve for x
    x = 1,387,139,644.21/51,307.78
  6. Step 6: Final answer
    x = 27,035.66

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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.