Home / 68,729.62-102,919.47-45,284.98

Finding the Fourth Proportional to 68,729.62, 102,919.47 and 45,284.98

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Solution

The fourth proportional to 68,729.62, 102,919.47 and 45,284.98 is: 67,812.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,729.62 : 102,919.47 = 45,284.98 : x
  2. Step 2: Convert to fraction form
    68,729.62/102,919.47 = 45,284.98/x
  3. Step 3: Cross multiply
    68,729.62x = 102,919.47 × 45,284.98
  4. Step 4: Simplify right side
    68,729.62x = 4,660,706,140.56
  5. Step 5: Solve for x
    x = 4,660,706,140.56/68,729.62
  6. Step 6: Final answer
    x = 67,812.19

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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.