Home / 68,288.61-102,429.27-20,903.73

Finding the Fourth Proportional to 68,288.61, 102,429.27 and 20,903.73

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Solution

The fourth proportional to 68,288.61, 102,429.27 and 20,903.73 is: 31,354.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,288.61 : 102,429.27 = 20,903.73 : x
  2. Step 2: Convert to fraction form
    68,288.61/102,429.27 = 20,903.73/x
  3. Step 3: Cross multiply
    68,288.61x = 102,429.27 × 20,903.73
  4. Step 4: Simplify right side
    68,288.61x = 2,141,153,804.18
  5. Step 5: Solve for x
    x = 2,141,153,804.18/68,288.61
  6. Step 6: Final answer
    x = 31,354.48

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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.