Home / 78,661.45-117,993.39-22,500.51

Finding the Fourth Proportional to 78,661.45, 117,993.39 and 22,500.51

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Solution

The fourth proportional to 78,661.45, 117,993.39 and 22,500.51 is: 33,751.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,661.45 : 117,993.39 = 22,500.51 : x
  2. Step 2: Convert to fraction form
    78,661.45/117,993.39 = 22,500.51/x
  3. Step 3: Cross multiply
    78,661.45x = 117,993.39 × 22,500.51
  4. Step 4: Simplify right side
    78,661.45x = 2,654,911,451.63
  5. Step 5: Solve for x
    x = 2,654,911,451.63/78,661.45
  6. Step 6: Final answer
    x = 33,751.11

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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.