Home / 54,983.79-75,860.00-30,781.20

Finding the Fourth Proportional to 54,983.79, 75,860.00 and 30,781.20

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Solution

The fourth proportional to 54,983.79, 75,860.00 and 30,781.20 is: 42,468.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,983.79 : 75,860.00 = 30,781.20 : x
  2. Step 2: Convert to fraction form
    54,983.79/75,860.00 = 30,781.20/x
  3. Step 3: Cross multiply
    54,983.79x = 75,860.00 × 30,781.20
  4. Step 4: Simplify right side
    54,983.79x = 2,335,061,488.44
  5. Step 5: Solve for x
    x = 2,335,061,488.44/54,983.79
  6. Step 6: Final answer
    x = 42,468.18

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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.