Home / 76,721.69-115,004.12-51,764.27

Finding the Fourth Proportional to 76,721.69, 115,004.12 and 51,764.27

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Solution

The fourth proportional to 76,721.69, 115,004.12 and 51,764.27 is: 77,593.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,721.69 : 115,004.12 = 51,764.27 : x
  2. Step 2: Convert to fraction form
    76,721.69/115,004.12 = 51,764.27/x
  3. Step 3: Cross multiply
    76,721.69x = 115,004.12 × 51,764.27
  4. Step 4: Simplify right side
    76,721.69x = 5,953,104,347.48
  5. Step 5: Solve for x
    x = 5,953,104,347.48/76,721.69
  6. Step 6: Final answer
    x = 77,593.50

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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.