Home / 68,918.41-103,398.37-21,531.59

Finding the Fourth Proportional to 68,918.41, 103,398.37 and 21,531.59

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Solution

The fourth proportional to 68,918.41, 103,398.37 and 21,531.59 is: 32,303.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,918.41 : 103,398.37 = 21,531.59 : x
  2. Step 2: Convert to fraction form
    68,918.41/103,398.37 = 21,531.59/x
  3. Step 3: Cross multiply
    68,918.41x = 103,398.37 × 21,531.59
  4. Step 4: Simplify right side
    68,918.41x = 2,226,331,309.51
  5. Step 5: Solve for x
    x = 2,226,331,309.51/68,918.41
  6. Step 6: Final answer
    x = 32,303.87

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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.