Home / 68,864.20-103,099.20-42,390.70

Finding the Fourth Proportional to 68,864.20, 103,099.20 and 42,390.70

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Solution

The fourth proportional to 68,864.20, 103,099.20 and 42,390.70 is: 63,464.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,864.20 : 103,099.20 = 42,390.70 : x
  2. Step 2: Convert to fraction form
    68,864.20/103,099.20 = 42,390.70/x
  3. Step 3: Cross multiply
    68,864.20x = 103,099.20 × 42,390.70
  4. Step 4: Simplify right side
    68,864.20x = 4,370,447,257.44
  5. Step 5: Solve for x
    x = 4,370,447,257.44/68,864.20
  6. Step 6: Final answer
    x = 63,464.72

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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.