Home / 68,362.80-94,338.36-40,087.20

Finding the Fourth Proportional to 68,362.80, 94,338.36 and 40,087.20

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Solution

The fourth proportional to 68,362.80, 94,338.36 and 40,087.20 is: 55,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,362.80 : 94,338.36 = 40,087.20 : x
  2. Step 2: Convert to fraction form
    68,362.80/94,338.36 = 40,087.20/x
  3. Step 3: Cross multiply
    68,362.80x = 94,338.36 × 40,087.20
  4. Step 4: Simplify right side
    68,362.80x = 3,781,760,704.99
  5. Step 5: Solve for x
    x = 3,781,760,704.99/68,362.80
  6. Step 6: Final answer
    x = 55,318.98

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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.