Home / 76,871.88-115,345.49-51,587.33

Finding the Fourth Proportional to 76,871.88, 115,345.49 and 51,587.33

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Solution

The fourth proportional to 76,871.88, 115,345.49 and 51,587.33 is: 77,406.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,871.88 : 115,345.49 = 51,587.33 : x
  2. Step 2: Convert to fraction form
    76,871.88/115,345.49 = 51,587.33/x
  3. Step 3: Cross multiply
    76,871.88x = 115,345.49 × 51,587.33
  4. Step 4: Simplify right side
    76,871.88x = 5,950,365,021.98
  5. Step 5: Solve for x
    x = 5,950,365,021.98/76,871.88
  6. Step 6: Final answer
    x = 77,406.26

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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.