Home / 78,555.78-117,837.30-22,399.70

Finding the Fourth Proportional to 78,555.78, 117,837.30 and 22,399.70

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Solution

The fourth proportional to 78,555.78, 117,837.30 and 22,399.70 is: 33,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,555.78 : 117,837.30 = 22,399.70 : x
  2. Step 2: Convert to fraction form
    78,555.78/117,837.30 = 22,399.70/x
  3. Step 3: Cross multiply
    78,555.78x = 117,837.30 × 22,399.70
  4. Step 4: Simplify right side
    78,555.78x = 2,639,519,579.62
  5. Step 5: Solve for x
    x = 2,639,519,579.62/78,555.78
  6. Step 6: Final answer
    x = 33,600.58

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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.