Home / 45,111.19-67,642.31-13,516.87

Finding the Fourth Proportional to 45,111.19, 67,642.31 and 13,516.87

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Solution

The fourth proportional to 45,111.19, 67,642.31 and 13,516.87 is: 20,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,111.19 : 67,642.31 = 13,516.87 : x
  2. Step 2: Convert to fraction form
    45,111.19/67,642.31 = 13,516.87/x
  3. Step 3: Cross multiply
    45,111.19x = 67,642.31 × 13,516.87
  4. Step 4: Simplify right side
    45,111.19x = 914,312,243.19
  5. Step 5: Solve for x
    x = 914,312,243.19/45,111.19
  6. Step 6: Final answer
    x = 20,267.97

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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.