Home / 76,640.62-115,026.54-43,393.36

Finding the Fourth Proportional to 76,640.62, 115,026.54 and 43,393.36

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Solution

The fourth proportional to 76,640.62, 115,026.54 and 43,393.36 is: 65,127.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,640.62 : 115,026.54 = 43,393.36 : x
  2. Step 2: Convert to fraction form
    76,640.62/115,026.54 = 43,393.36/x
  3. Step 3: Cross multiply
    76,640.62x = 115,026.54 × 43,393.36
  4. Step 4: Simplify right side
    76,640.62x = 4,991,388,059.77
  5. Step 5: Solve for x
    x = 4,991,388,059.77/76,640.62
  6. Step 6: Final answer
    x = 65,127.19

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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.