Home / 73,107.07-109,664.46-20,520.65

Finding the Fourth Proportional to 73,107.07, 109,664.46 and 20,520.65

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Solution

The fourth proportional to 73,107.07, 109,664.46 and 20,520.65 is: 30,782.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,107.07 : 109,664.46 = 20,520.65 : x
  2. Step 2: Convert to fraction form
    73,107.07/109,664.46 = 20,520.65/x
  3. Step 3: Cross multiply
    73,107.07x = 109,664.46 × 20,520.65
  4. Step 4: Simplify right side
    73,107.07x = 2,250,386,275.26
  5. Step 5: Solve for x
    x = 2,250,386,275.26/73,107.07
  6. Step 6: Final answer
    x = 30,782.06

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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.