Home / 81,528.40-122,292.60-74,311.30

Finding the Fourth Proportional to 81,528.40, 122,292.60 and 74,311.30

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Solution

The fourth proportional to 81,528.40, 122,292.60 and 74,311.30 is: 111,466.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,528.40 : 122,292.60 = 74,311.30 : x
  2. Step 2: Convert to fraction form
    81,528.40/122,292.60 = 74,311.30/x
  3. Step 3: Cross multiply
    81,528.40x = 122,292.60 × 74,311.30
  4. Step 4: Simplify right side
    81,528.40x = 9,087,722,086.38
  5. Step 5: Solve for x
    x = 9,087,722,086.38/81,528.40
  6. Step 6: Final answer
    x = 111,466.95

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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.