Home / 68,155.14-102,248.88-21,408.02

Finding the Fourth Proportional to 68,155.14, 102,248.88 and 21,408.02

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Solution

The fourth proportional to 68,155.14, 102,248.88 and 21,408.02 is: 32,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,155.14 : 102,248.88 = 21,408.02 : x
  2. Step 2: Convert to fraction form
    68,155.14/102,248.88 = 21,408.02/x
  3. Step 3: Cross multiply
    68,155.14x = 102,248.88 × 21,408.02
  4. Step 4: Simplify right side
    68,155.14x = 2,188,946,068.02
  5. Step 5: Solve for x
    x = 2,188,946,068.02/68,155.14
  6. Step 6: Final answer
    x = 32,117.11

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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.