Home / 77,976.45-116,963.60-18,811.62

Finding the Fourth Proportional to 77,976.45, 116,963.60 and 18,811.62

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Solution

The fourth proportional to 77,976.45, 116,963.60 and 18,811.62 is: 28,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,976.45 : 116,963.60 = 18,811.62 : x
  2. Step 2: Convert to fraction form
    77,976.45/116,963.60 = 18,811.62/x
  3. Step 3: Cross multiply
    77,976.45x = 116,963.60 × 18,811.62
  4. Step 4: Simplify right side
    77,976.45x = 2,200,274,702.97
  5. Step 5: Solve for x
    x = 2,200,274,702.97/77,976.45
  6. Step 6: Final answer
    x = 28,217.17

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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.