Home / 80,770.43-121,155.75-21,606.08

Finding the Fourth Proportional to 80,770.43, 121,155.75 and 21,606.08

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Solution

The fourth proportional to 80,770.43, 121,155.75 and 21,606.08 is: 32,409.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,770.43 : 121,155.75 = 21,606.08 : x
  2. Step 2: Convert to fraction form
    80,770.43/121,155.75 = 21,606.08/x
  3. Step 3: Cross multiply
    80,770.43x = 121,155.75 × 21,606.08
  4. Step 4: Simplify right side
    80,770.43x = 2,617,700,221.18
  5. Step 5: Solve for x
    x = 2,617,700,221.18/80,770.43
  6. Step 6: Final answer
    x = 32,409.14

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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.