Home / 45,869.20-68,803.90-12,589.72

Finding the Fourth Proportional to 45,869.20, 68,803.90 and 12,589.72

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Solution

The fourth proportional to 45,869.20, 68,803.90 and 12,589.72 is: 18,884.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,869.20 : 68,803.90 = 12,589.72 : x
  2. Step 2: Convert to fraction form
    45,869.20/68,803.90 = 12,589.72/x
  3. Step 3: Cross multiply
    45,869.20x = 68,803.90 × 12,589.72
  4. Step 4: Simplify right side
    45,869.20x = 866,221,835.91
  5. Step 5: Solve for x
    x = 866,221,835.91/45,869.20
  6. Step 6: Final answer
    x = 18,884.61

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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.