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Finding the Fourth Proportional to 68,458.89, 102,700.00 and 30,521.92

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Solution

The fourth proportional to 68,458.89, 102,700.00 and 30,521.92 is: 45,788.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,458.89 : 102,700.00 = 30,521.92 : x
  2. Step 2: Convert to fraction form
    68,458.89/102,700.00 = 30,521.92/x
  3. Step 3: Cross multiply
    68,458.89x = 102,700.00 × 30,521.92
  4. Step 4: Simplify right side
    68,458.89x = 3,134,601,340.09
  5. Step 5: Solve for x
    x = 3,134,601,340.09/68,458.89
  6. Step 6: Final answer
    x = 45,788.09

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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.