Home / 81,663.39-122,261.40-55,321.38

Finding the Fourth Proportional to 81,663.39, 122,261.40 and 55,321.38

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Solution

The fourth proportional to 81,663.39, 122,261.40 and 55,321.38 is: 82,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,663.39 : 122,261.40 = 55,321.38 : x
  2. Step 2: Convert to fraction form
    81,663.39/122,261.40 = 55,321.38/x
  3. Step 3: Cross multiply
    81,663.39x = 122,261.40 × 55,321.38
  4. Step 4: Simplify right side
    81,663.39x = 6,763,669,368.73
  5. Step 5: Solve for x
    x = 6,763,669,368.73/81,663.39
  6. Step 6: Final answer
    x = 82,823.76

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1.5x scale

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.