Home / 68,712.20-103,068.30-53,160.20

Finding the Fourth Proportional to 68,712.20, 103,068.30 and 53,160.20

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Solution

The fourth proportional to 68,712.20, 103,068.30 and 53,160.20 is: 79,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,712.20 : 103,068.30 = 53,160.20 : x
  2. Step 2: Convert to fraction form
    68,712.20/103,068.30 = 53,160.20/x
  3. Step 3: Cross multiply
    68,712.20x = 103,068.30 × 53,160.20
  4. Step 4: Simplify right side
    68,712.20x = 5,479,131,441.66
  5. Step 5: Solve for x
    x = 5,479,131,441.66/68,712.20
  6. Step 6: Final answer
    x = 79,740.30

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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.