Home / 68,980.13-103,376.63-31,493.73

Finding the Fourth Proportional to 68,980.13, 103,376.63 and 31,493.73

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Solution

The fourth proportional to 68,980.13, 103,376.63 and 31,493.73 is: 47,197.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.13 : 103,376.63 = 31,493.73 : x
  2. Step 2: Convert to fraction form
    68,980.13/103,376.63 = 31,493.73/x
  3. Step 3: Cross multiply
    68,980.13x = 103,376.63 × 31,493.73
  4. Step 4: Simplify right side
    68,980.13x = 3,255,715,516.06
  5. Step 5: Solve for x
    x = 3,255,715,516.06/68,980.13
  6. Step 6: Final answer
    x = 47,197.88

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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.