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Finding the Fourth Proportional to 76,843.91, 115,259.38 and 43,458.95

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Solution

The fourth proportional to 76,843.91, 115,259.38 and 43,458.95 is: 65,184.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,843.91 : 115,259.38 = 43,458.95 : x
  2. Step 2: Convert to fraction form
    76,843.91/115,259.38 = 43,458.95/x
  3. Step 3: Cross multiply
    76,843.91x = 115,259.38 × 43,458.95
  4. Step 4: Simplify right side
    76,843.91x = 5,009,051,811.95
  5. Step 5: Solve for x
    x = 5,009,051,811.95/76,843.91
  6. Step 6: Final answer
    x = 65,184.76

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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.