Home / 45,811.31-68,718.38-21,790.35

Finding the Fourth Proportional to 45,811.31, 68,718.38 and 21,790.35

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Solution

The fourth proportional to 45,811.31, 68,718.38 and 21,790.35 is: 32,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,811.31 : 68,718.38 = 21,790.35 : x
  2. Step 2: Convert to fraction form
    45,811.31/68,718.38 = 21,790.35/x
  3. Step 3: Cross multiply
    45,811.31x = 68,718.38 × 21,790.35
  4. Step 4: Simplify right side
    45,811.31x = 1,497,397,442.68
  5. Step 5: Solve for x
    x = 1,497,397,442.68/45,811.31
  6. Step 6: Final answer
    x = 32,686.20

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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.