Home / 81,166.39-121,777.26-43,730.31

Finding the Fourth Proportional to 81,166.39, 121,777.26 and 43,730.31

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Solution

The fourth proportional to 81,166.39, 121,777.26 and 43,730.31 is: 65,610.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,166.39 : 121,777.26 = 43,730.31 : x
  2. Step 2: Convert to fraction form
    81,166.39/121,777.26 = 43,730.31/x
  3. Step 3: Cross multiply
    81,166.39x = 121,777.26 × 43,730.31
  4. Step 4: Simplify right side
    81,166.39x = 5,325,357,330.75
  5. Step 5: Solve for x
    x = 5,325,357,330.75/81,166.39
  6. Step 6: Final answer
    x = 65,610.38

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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.