Home / 51,178.69-76,716.03-21,209.23

Finding the Fourth Proportional to 51,178.69, 76,716.03 and 21,209.23

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Solution

The fourth proportional to 51,178.69, 76,716.03 and 21,209.23 is: 31,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,178.69 : 76,716.03 = 21,209.23 : x
  2. Step 2: Convert to fraction form
    51,178.69/76,716.03 = 21,209.23/x
  3. Step 3: Cross multiply
    51,178.69x = 76,716.03 × 21,209.23
  4. Step 4: Simplify right side
    51,178.69x = 1,627,087,818.91
  5. Step 5: Solve for x
    x = 1,627,087,818.91/51,178.69
  6. Step 6: Final answer
    x = 31,792.29

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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.