Home / 81,656.97-122,370.58-64,942.82

Finding the Fourth Proportional to 81,656.97, 122,370.58 and 64,942.82

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Solution

The fourth proportional to 81,656.97, 122,370.58 and 64,942.82 is: 97,322.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656.97 : 122,370.58 = 64,942.82 : x
  2. Step 2: Convert to fraction form
    81,656.97/122,370.58 = 64,942.82/x
  3. Step 3: Cross multiply
    81,656.97x = 122,370.58 × 64,942.82
  4. Step 4: Simplify right side
    81,656.97x = 7,947,090,693.80
  5. Step 5: Solve for x
    x = 7,947,090,693.80/81,656.97
  6. Step 6: Final answer
    x = 97,322.87

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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.