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Finding the Fourth Proportional to 67,930.93, 101,891.49 and 21,182.59

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Solution

The fourth proportional to 67,930.93, 101,891.49 and 21,182.59 is: 31,772.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,930.93 : 101,891.49 = 21,182.59 : x
  2. Step 2: Convert to fraction form
    67,930.93/101,891.49 = 21,182.59/x
  3. Step 3: Cross multiply
    67,930.93x = 101,891.49 × 21,182.59
  4. Step 4: Simplify right side
    67,930.93x = 2,158,325,657.16
  5. Step 5: Solve for x
    x = 2,158,325,657.16/67,930.93
  6. Step 6: Final answer
    x = 31,772.36

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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.