Home / 45,418.41-68,119.50-13,820.81

Finding the Fourth Proportional to 45,418.41, 68,119.50 and 13,820.81

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Solution

The fourth proportional to 45,418.41, 68,119.50 and 13,820.81 is: 20,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,418.41 : 68,119.50 = 13,820.81 : x
  2. Step 2: Convert to fraction form
    45,418.41/68,119.50 = 13,820.81/x
  3. Step 3: Cross multiply
    45,418.41x = 68,119.50 × 13,820.81
  4. Step 4: Simplify right side
    45,418.41x = 941,466,326.20
  5. Step 5: Solve for x
    x = 941,466,326.20/45,418.41
  6. Step 6: Final answer
    x = 20,728.74

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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.