Home / 54,865.50-75,717.63-30,991.56

Finding the Fourth Proportional to 54,865.50, 75,717.63 and 30,991.56

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Solution

The fourth proportional to 54,865.50, 75,717.63 and 30,991.56 is: 42,770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,865.50 : 75,717.63 = 30,991.56 : x
  2. Step 2: Convert to fraction form
    54,865.50/75,717.63 = 30,991.56/x
  3. Step 3: Cross multiply
    54,865.50x = 75,717.63 × 30,991.56
  4. Step 4: Simplify right side
    54,865.50x = 2,346,607,473.20
  5. Step 5: Solve for x
    x = 2,346,607,473.20/54,865.50
  6. Step 6: Final answer
    x = 42,770.18

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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.