Home / 68,438.02-102,659.94-21,689.86

Finding the Fourth Proportional to 68,438.02, 102,659.94 and 21,689.86

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Solution

The fourth proportional to 68,438.02, 102,659.94 and 21,689.86 is: 32,535.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,438.02 : 102,659.94 = 21,689.86 : x
  2. Step 2: Convert to fraction form
    68,438.02/102,659.94 = 21,689.86/x
  3. Step 3: Cross multiply
    68,438.02x = 102,659.94 × 21,689.86
  4. Step 4: Simplify right side
    68,438.02x = 2,226,679,726.21
  5. Step 5: Solve for x
    x = 2,226,679,726.21/68,438.02
  6. Step 6: Final answer
    x = 32,535.71

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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.