Home / 45,719.45-68,587.70-20,761.23

Finding the Fourth Proportional to 45,719.45, 68,587.70 and 20,761.23

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Solution

The fourth proportional to 45,719.45, 68,587.70 and 20,761.23 is: 31,145.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,719.45 : 68,587.70 = 20,761.23 : x
  2. Step 2: Convert to fraction form
    45,719.45/68,587.70 = 20,761.23/x
  3. Step 3: Cross multiply
    45,719.45x = 68,587.70 × 20,761.23
  4. Step 4: Simplify right side
    45,719.45x = 1,423,965,014.87
  5. Step 5: Solve for x
    x = 1,423,965,014.87/45,719.45
  6. Step 6: Final answer
    x = 31,145.72

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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.