Home / 81,816.48-122,880.32-50,868

Finding the Fourth Proportional to 81,816.48, 122,880.32 and 50,868

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Solution

The fourth proportional to 81,816.48, 122,880.32 and 50,868 is: 76,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.48 : 122,880.32 = 50,868 : x
  2. Step 2: Convert to fraction form
    81,816.48/122,880.32 = 50,868/x
  3. Step 3: Cross multiply
    81,816.48x = 122,880.32 × 50,868
  4. Step 4: Simplify right side
    81,816.48x = 6,250,676,117.76
  5. Step 5: Solve for x
    x = 6,250,676,117.76/81,816.48
  6. Step 6: Final answer
    x = 76,398.74

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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.