Home / 68,272.90-102,409.35-36,780.10

Finding the Fourth Proportional to 68,272.90, 102,409.35 and 36,780.10

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Solution

The fourth proportional to 68,272.90, 102,409.35 and 36,780.10 is: 55,170.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,272.90 : 102,409.35 = 36,780.10 : x
  2. Step 2: Convert to fraction form
    68,272.90/102,409.35 = 36,780.10/x
  3. Step 3: Cross multiply
    68,272.90x = 102,409.35 × 36,780.10
  4. Step 4: Simplify right side
    68,272.90x = 3,766,626,133.94
  5. Step 5: Solve for x
    x = 3,766,626,133.94/68,272.90
  6. Step 6: Final answer
    x = 55,170.15

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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.