Home / 78,023.14-117,034.74-18,858.80

Finding the Fourth Proportional to 78,023.14, 117,034.74 and 18,858.80

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Solution

The fourth proportional to 78,023.14, 117,034.74 and 18,858.80 is: 28,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,023.14 : 117,034.74 = 18,858.80 : x
  2. Step 2: Convert to fraction form
    78,023.14/117,034.74 = 18,858.80/x
  3. Step 3: Cross multiply
    78,023.14x = 117,034.74 × 18,858.80
  4. Step 4: Simplify right side
    78,023.14x = 2,207,135,047.30
  5. Step 5: Solve for x
    x = 2,207,135,047.30/78,023.14
  6. Step 6: Final answer
    x = 28,288.21

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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.