Home / 68,985.45-103,334.67-66,606.21

Finding the Fourth Proportional to 68,985.45, 103,334.67 and 66,606.21

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Solution

The fourth proportional to 68,985.45, 103,334.67 and 66,606.21 is: 99,770.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,985.45 : 103,334.67 = 66,606.21 : x
  2. Step 2: Convert to fraction form
    68,985.45/103,334.67 = 66,606.21/x
  3. Step 3: Cross multiply
    68,985.45x = 103,334.67 × 66,606.21
  4. Step 4: Simplify right side
    68,985.45x = 6,882,730,730.30
  5. Step 5: Solve for x
    x = 6,882,730,730.30/68,985.45
  6. Step 6: Final answer
    x = 99,770.76

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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.