Home / 45,811.83-68,718.06-12,531.15

Finding the Fourth Proportional to 45,811.83, 68,718.06 and 12,531.15

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Solution

The fourth proportional to 45,811.83, 68,718.06 and 12,531.15 is: 18,796.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,811.83 : 68,718.06 = 12,531.15 : x
  2. Step 2: Convert to fraction form
    45,811.83/68,718.06 = 12,531.15/x
  3. Step 3: Cross multiply
    45,811.83x = 68,718.06 × 12,531.15
  4. Step 4: Simplify right side
    45,811.83x = 861,116,317.57
  5. Step 5: Solve for x
    x = 861,116,317.57/45,811.83
  6. Step 6: Final answer
    x = 18,796.81

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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.