Home / 67,986.48-101,979.76-21,243.36

Finding the Fourth Proportional to 67,986.48, 101,979.76 and 21,243.36

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Solution

The fourth proportional to 67,986.48, 101,979.76 and 21,243.36 is: 31,865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,986.48 : 101,979.76 = 21,243.36 : x
  2. Step 2: Convert to fraction form
    67,986.48/101,979.76 = 21,243.36/x
  3. Step 3: Cross multiply
    67,986.48x = 101,979.76 × 21,243.36
  4. Step 4: Simplify right side
    67,986.48x = 2,166,392,754.39
  5. Step 5: Solve for x
    x = 2,166,392,754.39/67,986.48
  6. Step 6: Final answer
    x = 31,865.05

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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.