Home / 54,859.50-75,709.35-30,985.56

Finding the Fourth Proportional to 54,859.50, 75,709.35 and 30,985.56

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Solution

The fourth proportional to 54,859.50, 75,709.35 and 30,985.56 is: 42,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,859.50 : 75,709.35 = 30,985.56 : x
  2. Step 2: Convert to fraction form
    54,859.50/75,709.35 = 30,985.56/x
  3. Step 3: Cross multiply
    54,859.50x = 75,709.35 × 30,985.56
  4. Step 4: Simplify right side
    54,859.50x = 2,345,896,606.99
  5. Step 5: Solve for x
    x = 2,345,896,606.99/54,859.50
  6. Step 6: Final answer
    x = 42,761.90

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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.