Home / 68,330.07-102,509.96-20,945.34

Finding the Fourth Proportional to 68,330.07, 102,509.96 and 20,945.34

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Solution

The fourth proportional to 68,330.07, 102,509.96 and 20,945.34 is: 31,422.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,330.07 : 102,509.96 = 20,945.34 : x
  2. Step 2: Convert to fraction form
    68,330.07/102,509.96 = 20,945.34/x
  3. Step 3: Cross multiply
    68,330.07x = 102,509.96 × 20,945.34
  4. Step 4: Simplify right side
    68,330.07x = 2,147,105,860.86
  5. Step 5: Solve for x
    x = 2,147,105,860.86/68,330.07
  6. Step 6: Final answer
    x = 31,422.56

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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.