Home / 81,336.70-122,005.05-57,717.10

Finding the Fourth Proportional to 81,336.70, 122,005.05 and 57,717.10

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Solution

The fourth proportional to 81,336.70, 122,005.05 and 57,717.10 is: 86,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,336.70 : 122,005.05 = 57,717.10 : x
  2. Step 2: Convert to fraction form
    81,336.70/122,005.05 = 57,717.10/x
  3. Step 3: Cross multiply
    81,336.70x = 122,005.05 × 57,717.10
  4. Step 4: Simplify right side
    81,336.70x = 7,041,777,671.36
  5. Step 5: Solve for x
    x = 7,041,777,671.36/81,336.70
  6. Step 6: Final answer
    x = 86,575.65

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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.