Home / 77,976.09-116,963.01-18,811.26

Finding the Fourth Proportional to 77,976.09, 116,963.01 and 18,811.26

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Solution

The fourth proportional to 77,976.09, 116,963.01 and 18,811.26 is: 28,216.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,976.09 : 116,963.01 = 18,811.26 : x
  2. Step 2: Convert to fraction form
    77,976.09/116,963.01 = 18,811.26/x
  3. Step 3: Cross multiply
    77,976.09x = 116,963.01 × 18,811.26
  4. Step 4: Simplify right side
    77,976.09x = 2,200,221,591.49
  5. Step 5: Solve for x
    x = 2,200,221,591.49/77,976.09
  6. Step 6: Final answer
    x = 28,216.62

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1.5x scale

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.