Home / 73,139.43-109,728.62-31,021.23

Finding the Fourth Proportional to 73,139.43, 109,728.62 and 31,021.23

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Solution

The fourth proportional to 73,139.43, 109,728.62 and 31,021.23 is: 46,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,139.43 : 109,728.62 = 31,021.23 : x
  2. Step 2: Convert to fraction form
    73,139.43/109,728.62 = 31,021.23/x
  3. Step 3: Cross multiply
    73,139.43x = 109,728.62 × 31,021.23
  4. Step 4: Simplify right side
    73,139.43x = 3,403,916,688.58
  5. Step 5: Solve for x
    x = 3,403,916,688.58/73,139.43
  6. Step 6: Final answer
    x = 46,540.10

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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.