Home / 85,338.70-117,739.31-55,141.80

Finding the Fourth Proportional to 85,338.70, 117,739.31 and 55,141.80

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Solution

The fourth proportional to 85,338.70, 117,739.31 and 55,141.80 is: 76,077.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,338.70 : 117,739.31 = 55,141.80 : x
  2. Step 2: Convert to fraction form
    85,338.70/117,739.31 = 55,141.80/x
  3. Step 3: Cross multiply
    85,338.70x = 117,739.31 × 55,141.80
  4. Step 4: Simplify right side
    85,338.70x = 6,492,356,766.93
  5. Step 5: Solve for x
    x = 6,492,356,766.93/85,338.70
  6. Step 6: Final answer
    x = 76,077.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.