Home / 68,423.80-102,621.30-28,982.20

Finding the Fourth Proportional to 68,423.80, 102,621.30 and 28,982.20

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Solution

The fourth proportional to 68,423.80, 102,621.30 and 28,982.20 is: 43,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,423.80 : 102,621.30 = 28,982.20 : x
  2. Step 2: Convert to fraction form
    68,423.80/102,621.30 = 28,982.20/x
  3. Step 3: Cross multiply
    68,423.80x = 102,621.30 × 28,982.20
  4. Step 4: Simplify right side
    68,423.80x = 2,974,191,040.86
  5. Step 5: Solve for x
    x = 2,974,191,040.86/68,423.80
  6. Step 6: Final answer
    x = 43,467.20

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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.