Home / 54,103.15-81,143.73-45,311.41

Finding the Fourth Proportional to 54,103.15, 81,143.73 and 45,311.41

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Solution

The fourth proportional to 54,103.15, 81,143.73 and 45,311.41 is: 67,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,103.15 : 81,143.73 = 45,311.41 : x
  2. Step 2: Convert to fraction form
    54,103.15/81,143.73 = 45,311.41/x
  3. Step 3: Cross multiply
    54,103.15x = 81,143.73 × 45,311.41
  4. Step 4: Simplify right side
    54,103.15x = 3,676,736,818.96
  5. Step 5: Solve for x
    x = 3,676,736,818.96/54,103.15
  6. Step 6: Final answer
    x = 67,957.91

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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.