Home / 78,034.26-117,048.62-21,873.90

Finding the Fourth Proportional to 78,034.26, 117,048.62 and 21,873.90

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Solution

The fourth proportional to 78,034.26, 117,048.62 and 21,873.90 is: 32,810.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,034.26 : 117,048.62 = 21,873.90 : x
  2. Step 2: Convert to fraction form
    78,034.26/117,048.62 = 21,873.90/x
  3. Step 3: Cross multiply
    78,034.26x = 117,048.62 × 21,873.90
  4. Step 4: Simplify right side
    78,034.26x = 2,560,309,809.02
  5. Step 5: Solve for x
    x = 2,560,309,809.02/78,034.26
  6. Step 6: Final answer
    x = 32,810.07

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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.