Home / 68,729.29-103,090.14-18,805.81

Finding the Fourth Proportional to 68,729.29, 103,090.14 and 18,805.81

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Solution

The fourth proportional to 68,729.29, 103,090.14 and 18,805.81 is: 28,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,729.29 : 103,090.14 = 18,805.81 : x
  2. Step 2: Convert to fraction form
    68,729.29/103,090.14 = 18,805.81/x
  3. Step 3: Cross multiply
    68,729.29x = 103,090.14 × 18,805.81
  4. Step 4: Simplify right side
    68,729.29x = 1,938,693,369.70
  5. Step 5: Solve for x
    x = 1,938,693,369.70/68,729.29
  6. Step 6: Final answer
    x = 28,207.67

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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.