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Finding the Fourth Proportional to 78,850.39, 108,797.29 and 45,309.91

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Solution

The fourth proportional to 78,850.39, 108,797.29 and 45,309.91 is: 62,518.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.39 : 108,797.29 = 45,309.91 : x
  2. Step 2: Convert to fraction form
    78,850.39/108,797.29 = 45,309.91/x
  3. Step 3: Cross multiply
    78,850.39x = 108,797.29 × 45,309.91
  4. Step 4: Simplify right side
    78,850.39x = 4,929,595,418.14
  5. Step 5: Solve for x
    x = 4,929,595,418.14/78,850.39
  6. Step 6: Final answer
    x = 62,518.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.