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Finding the Fourth Proportional to 77,179.88, 115,650.31 and 53,533.39

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Solution

The fourth proportional to 77,179.88, 115,650.31 and 53,533.39 is: 80,217.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,179.88 : 115,650.31 = 53,533.39 : x
  2. Step 2: Convert to fraction form
    77,179.88/115,650.31 = 53,533.39/x
  3. Step 3: Cross multiply
    77,179.88x = 115,650.31 × 53,533.39
  4. Step 4: Simplify right side
    77,179.88x = 6,191,153,148.85
  5. Step 5: Solve for x
    x = 6,191,153,148.85/77,179.88
  6. Step 6: Final answer
    x = 80,217.19

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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.