Home / 77,480.28-116,205.09-21,305.90

Finding the Fourth Proportional to 77,480.28, 116,205.09 and 21,305.90

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Solution

The fourth proportional to 77,480.28, 116,205.09 and 21,305.90 is: 31,954.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,480.28 : 116,205.09 = 21,305.90 : x
  2. Step 2: Convert to fraction form
    77,480.28/116,205.09 = 21,305.90/x
  3. Step 3: Cross multiply
    77,480.28x = 116,205.09 × 21,305.90
  4. Step 4: Simplify right side
    77,480.28x = 2,475,853,446.01
  5. Step 5: Solve for x
    x = 2,475,853,446.01/77,480.28
  6. Step 6: Final answer
    x = 31,954.63

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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.