Home / 81,022.08-121,532.94-28,446.60

Finding the Fourth Proportional to 81,022.08, 121,532.94 and 28,446.60

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Solution

The fourth proportional to 81,022.08, 121,532.94 and 28,446.60 is: 42,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,022.08 : 121,532.94 = 28,446.60 : x
  2. Step 2: Convert to fraction form
    81,022.08/121,532.94 = 28,446.60/x
  3. Step 3: Cross multiply
    81,022.08x = 121,532.94 × 28,446.60
  4. Step 4: Simplify right side
    81,022.08x = 3,457,198,931.00
  5. Step 5: Solve for x
    x = 3,457,198,931.00/81,022.08
  6. Step 6: Final answer
    x = 42,669.84

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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.