Home / 78,493.07-117,738.59-19,329.26

Finding the Fourth Proportional to 78,493.07, 117,738.59 and 19,329.26

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Solution

The fourth proportional to 78,493.07, 117,738.59 and 19,329.26 is: 28,993.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,493.07 : 117,738.59 = 19,329.26 : x
  2. Step 2: Convert to fraction form
    78,493.07/117,738.59 = 19,329.26/x
  3. Step 3: Cross multiply
    78,493.07x = 117,738.59 × 19,329.26
  4. Step 4: Simplify right side
    78,493.07x = 2,275,799,132.80
  5. Step 5: Solve for x
    x = 2,275,799,132.80/78,493.07
  6. Step 6: Final answer
    x = 28,993.63

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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.