Home / 40,690.72-61,067.31-18,208.36

Finding the Fourth Proportional to 40,690.72, 61,067.31 and 18,208.36

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Solution

The fourth proportional to 40,690.72, 61,067.31 and 18,208.36 is: 27,326.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,690.72 : 61,067.31 = 18,208.36 : x
  2. Step 2: Convert to fraction form
    40,690.72/61,067.31 = 18,208.36/x
  3. Step 3: Cross multiply
    40,690.72x = 61,067.31 × 18,208.36
  4. Step 4: Simplify right side
    40,690.72x = 1,111,935,564.71
  5. Step 5: Solve for x
    x = 1,111,935,564.71/40,690.72
  6. Step 6: Final answer
    x = 27,326.51

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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.