Home / 68,513.40-102,768.66-31,577.40

Finding the Fourth Proportional to 68,513.40, 102,768.66 and 31,577.40

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Solution

The fourth proportional to 68,513.40, 102,768.66 and 31,577.40 is: 47,365.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,513.40 : 102,768.66 = 31,577.40 : x
  2. Step 2: Convert to fraction form
    68,513.40/102,768.66 = 31,577.40/x
  3. Step 3: Cross multiply
    68,513.40x = 102,768.66 × 31,577.40
  4. Step 4: Simplify right side
    68,513.40x = 3,245,167,084.28
  5. Step 5: Solve for x
    x = 3,245,167,084.28/68,513.40
  6. Step 6: Final answer
    x = 47,365.44

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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.