Home / 45,419.99-68,133.38-12,139.29

Finding the Fourth Proportional to 45,419.99, 68,133.38 and 12,139.29

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Solution

The fourth proportional to 45,419.99, 68,133.38 and 12,139.29 is: 18,209.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,419.99 : 68,133.38 = 12,139.29 : x
  2. Step 2: Convert to fraction form
    45,419.99/68,133.38 = 12,139.29/x
  3. Step 3: Cross multiply
    45,419.99x = 68,133.38 × 12,139.29
  4. Step 4: Simplify right side
    45,419.99x = 827,090,797.80
  5. Step 5: Solve for x
    x = 827,090,797.80/45,419.99
  6. Step 6: Final answer
    x = 18,209.84

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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.