Home / 76,912.86-115,475.52-53,161.90

Finding the Fourth Proportional to 76,912.86, 115,475.52 and 53,161.90

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Solution

The fourth proportional to 76,912.86, 115,475.52 and 53,161.90 is: 79,816.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912.86 : 115,475.52 = 53,161.90 : x
  2. Step 2: Convert to fraction form
    76,912.86/115,475.52 = 53,161.90/x
  3. Step 3: Cross multiply
    76,912.86x = 115,475.52 × 53,161.90
  4. Step 4: Simplify right side
    76,912.86x = 6,138,898,046.69
  5. Step 5: Solve for x
    x = 6,138,898,046.69/76,912.86
  6. Step 6: Final answer
    x = 79,816.28

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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.