Home / 81,916.52-122,865.10-48,202.76

Finding the Fourth Proportional to 81,916.52, 122,865.10 and 48,202.76

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Solution

The fourth proportional to 81,916.52, 122,865.10 and 48,202.76 is: 72,298.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,916.52 : 122,865.10 = 48,202.76 : x
  2. Step 2: Convert to fraction form
    81,916.52/122,865.10 = 48,202.76/x
  3. Step 3: Cross multiply
    81,916.52x = 122,865.10 × 48,202.76
  4. Step 4: Simplify right side
    81,916.52x = 5,922,436,927.68
  5. Step 5: Solve for x
    x = 5,922,436,927.68/81,916.52
  6. Step 6: Final answer
    x = 72,298.44

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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.