Home / 81,582.46-122,463.09-64,823.20

Finding the Fourth Proportional to 81,582.46, 122,463.09 and 64,823.20

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Solution

The fourth proportional to 81,582.46, 122,463.09 and 64,823.20 is: 97,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.46 : 122,463.09 = 64,823.20 : x
  2. Step 2: Convert to fraction form
    81,582.46/122,463.09 = 64,823.20/x
  3. Step 3: Cross multiply
    81,582.46x = 122,463.09 × 64,823.20
  4. Step 4: Simplify right side
    81,582.46x = 7,938,449,375.69
  5. Step 5: Solve for x
    x = 7,938,449,375.69/81,582.46
  6. Step 6: Final answer
    x = 97,305.83

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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.