Home / 54,979.85-75,864.13-30,779.56

Finding the Fourth Proportional to 54,979.85, 75,864.13 and 30,779.56

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Solution

The fourth proportional to 54,979.85, 75,864.13 and 30,779.56 is: 42,471.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,979.85 : 75,864.13 = 30,779.56 : x
  2. Step 2: Convert to fraction form
    54,979.85/75,864.13 = 30,779.56/x
  3. Step 3: Cross multiply
    54,979.85x = 75,864.13 × 30,779.56
  4. Step 4: Simplify right side
    54,979.85x = 2,335,064,007.96
  5. Step 5: Solve for x
    x = 2,335,064,007.96/54,979.85
  6. Step 6: Final answer
    x = 42,471.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.