Home / 81,518.56-122,278-22,355.04

Finding the Fourth Proportional to 81,518.56, 122,278 and 22,355.04

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Solution

The fourth proportional to 81,518.56, 122,278 and 22,355.04 is: 33,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,518.56 : 122,278 = 22,355.04 : x
  2. Step 2: Convert to fraction form
    81,518.56/122,278 = 22,355.04/x
  3. Step 3: Cross multiply
    81,518.56x = 122,278 × 22,355.04
  4. Step 4: Simplify right side
    81,518.56x = 2,733,529,581.12
  5. Step 5: Solve for x
    x = 2,733,529,581.12/81,518.56
  6. Step 6: Final answer
    x = 33,532.60

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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.