Home / 57,979.72-86,998.76-43,218.28

Finding the Fourth Proportional to 57,979.72, 86,998.76 and 43,218.28

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Solution

The fourth proportional to 57,979.72, 86,998.76 and 43,218.28 is: 64,849.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,979.72 : 86,998.76 = 43,218.28 : x
  2. Step 2: Convert to fraction form
    57,979.72/86,998.76 = 43,218.28/x
  3. Step 3: Cross multiply
    57,979.72x = 86,998.76 × 43,218.28
  4. Step 4: Simplify right side
    57,979.72x = 3,759,936,769.33
  5. Step 5: Solve for x
    x = 3,759,936,769.33/57,979.72
  6. Step 6: Final answer
    x = 64,849.17

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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.