Home / 77,021.78-115,539.15-27,096.62

Finding the Fourth Proportional to 77,021.78, 115,539.15 and 27,096.62

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Solution

The fourth proportional to 77,021.78, 115,539.15 and 27,096.62 is: 40,647.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,021.78 : 115,539.15 = 27,096.62 : x
  2. Step 2: Convert to fraction form
    77,021.78/115,539.15 = 27,096.62/x
  3. Step 3: Cross multiply
    77,021.78x = 115,539.15 × 27,096.62
  4. Step 4: Simplify right side
    77,021.78x = 3,130,720,442.67
  5. Step 5: Solve for x
    x = 3,130,720,442.67/77,021.78
  6. Step 6: Final answer
    x = 40,647.21

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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.