Home / 81,623.38-122,266.59-75,717.94

Finding the Fourth Proportional to 81,623.38, 122,266.59 and 75,717.94

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Solution

The fourth proportional to 81,623.38, 122,266.59 and 75,717.94 is: 113,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.38 : 122,266.59 = 75,717.94 : x
  2. Step 2: Convert to fraction form
    81,623.38/122,266.59 = 75,717.94/x
  3. Step 3: Cross multiply
    81,623.38x = 122,266.59 × 75,717.94
  4. Step 4: Simplify right side
    81,623.38x = 9,257,774,325.62
  5. Step 5: Solve for x
    x = 9,257,774,325.62/81,623.38
  6. Step 6: Final answer
    x = 113,420.62

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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.