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Finding the Fourth Proportional to 68,934.31, 103,408.65 and 19,014.41

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Solution

The fourth proportional to 68,934.31, 103,408.65 and 19,014.41 is: 28,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,934.31 : 103,408.65 = 19,014.41 : x
  2. Step 2: Convert to fraction form
    68,934.31/103,408.65 = 19,014.41/x
  3. Step 3: Cross multiply
    68,934.31x = 103,408.65 × 19,014.41
  4. Step 4: Simplify right side
    68,934.31x = 1,966,254,373.57
  5. Step 5: Solve for x
    x = 1,966,254,373.57/68,934.31
  6. Step 6: Final answer
    x = 28,523.60

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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.