Home / 45,818.80-68,731.40-18,113.20

Finding the Fourth Proportional to 45,818.80, 68,731.40 and 18,113.20

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Solution

The fourth proportional to 45,818.80, 68,731.40 and 18,113.20 is: 27,171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,818.80 : 68,731.40 = 18,113.20 : x
  2. Step 2: Convert to fraction form
    45,818.80/68,731.40 = 18,113.20/x
  3. Step 3: Cross multiply
    45,818.80x = 68,731.40 × 18,113.20
  4. Step 4: Simplify right side
    45,818.80x = 1,244,945,594.48
  5. Step 5: Solve for x
    x = 1,244,945,594.48/45,818.80
  6. Step 6: Final answer
    x = 27,171.07

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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.