Home / 73,979.13-110,969.49-21,389.07

Finding the Fourth Proportional to 73,979.13, 110,969.49 and 21,389.07

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Solution

The fourth proportional to 73,979.13, 110,969.49 and 21,389.07 is: 32,083.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,979.13 : 110,969.49 = 21,389.07 : x
  2. Step 2: Convert to fraction form
    73,979.13/110,969.49 = 21,389.07/x
  3. Step 3: Cross multiply
    73,979.13x = 110,969.49 × 21,389.07
  4. Step 4: Simplify right side
    73,979.13x = 2,373,534,189.47
  5. Step 5: Solve for x
    x = 2,373,534,189.47/73,979.13
  6. Step 6: Final answer
    x = 32,083.83

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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.