Home / 77,270.12-115,914.30-27,339.80

Finding the Fourth Proportional to 77,270.12, 115,914.30 and 27,339.80

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Solution

The fourth proportional to 77,270.12, 115,914.30 and 27,339.80 is: 41,012.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,270.12 : 115,914.30 = 27,339.80 : x
  2. Step 2: Convert to fraction form
    77,270.12/115,914.30 = 27,339.80/x
  3. Step 3: Cross multiply
    77,270.12x = 115,914.30 × 27,339.80
  4. Step 4: Simplify right side
    77,270.12x = 3,169,073,779.14
  5. Step 5: Solve for x
    x = 3,169,073,779.14/77,270.12
  6. Step 6: Final answer
    x = 41,012.93

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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.