Home / 78,579.77-117,887.94-22,420.64

Finding the Fourth Proportional to 78,579.77, 117,887.94 and 22,420.64

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Solution

The fourth proportional to 78,579.77, 117,887.94 and 22,420.64 is: 33,636.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,579.77 : 117,887.94 = 22,420.64 : x
  2. Step 2: Convert to fraction form
    78,579.77/117,887.94 = 22,420.64/x
  3. Step 3: Cross multiply
    78,579.77x = 117,887.94 × 22,420.64
  4. Step 4: Simplify right side
    78,579.77x = 2,643,123,357.80
  5. Step 5: Solve for x
    x = 2,643,123,357.80/78,579.77
  6. Step 6: Final answer
    x = 33,636.18

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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.