Home / 45,148.36-67,721.82-12,316.36

Finding the Fourth Proportional to 45,148.36, 67,721.82 and 12,316.36

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Solution

The fourth proportional to 45,148.36, 67,721.82 and 12,316.36 is: 18,474.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,148.36 : 67,721.82 = 12,316.36 : x
  2. Step 2: Convert to fraction form
    45,148.36/67,721.82 = 12,316.36/x
  3. Step 3: Cross multiply
    45,148.36x = 67,721.82 × 12,316.36
  4. Step 4: Simplify right side
    45,148.36x = 834,086,314.98
  5. Step 5: Solve for x
    x = 834,086,314.98/45,148.36
  6. Step 6: Final answer
    x = 18,474.34

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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.