Home / 45,419.91-68,121.75-13,822.31

Finding the Fourth Proportional to 45,419.91, 68,121.75 and 13,822.31

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Solution

The fourth proportional to 45,419.91, 68,121.75 and 13,822.31 is: 20,730.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,419.91 : 68,121.75 = 13,822.31 : x
  2. Step 2: Convert to fraction form
    45,419.91/68,121.75 = 13,822.31/x
  3. Step 3: Cross multiply
    45,419.91x = 68,121.75 × 13,822.31
  4. Step 4: Simplify right side
    45,419.91x = 941,599,605.63
  5. Step 5: Solve for x
    x = 941,599,605.63/45,419.91
  6. Step 6: Final answer
    x = 20,730.99

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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.