Home / 45,129.74-67,649.94-21,395.66

Finding the Fourth Proportional to 45,129.74, 67,649.94 and 21,395.66

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Solution

The fourth proportional to 45,129.74, 67,649.94 and 21,395.66 is: 32,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,129.74 : 67,649.94 = 21,395.66 : x
  2. Step 2: Convert to fraction form
    45,129.74/67,649.94 = 21,395.66/x
  3. Step 3: Cross multiply
    45,129.74x = 67,649.94 × 21,395.66
  4. Step 4: Simplify right side
    45,129.74x = 1,447,414,777.01
  5. Step 5: Solve for x
    x = 1,447,414,777.01/45,129.74
  6. Step 6: Final answer
    x = 32,072.31

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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.