Home / 77,976.51-116,963.69-18,811.68

Finding the Fourth Proportional to 77,976.51, 116,963.69 and 18,811.68

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Solution

The fourth proportional to 77,976.51, 116,963.69 and 18,811.68 is: 28,217.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,976.51 : 116,963.69 = 18,811.68 : x
  2. Step 2: Convert to fraction form
    77,976.51/116,963.69 = 18,811.68/x
  3. Step 3: Cross multiply
    77,976.51x = 116,963.69 × 18,811.68
  4. Step 4: Simplify right side
    77,976.51x = 2,200,283,753.28
  5. Step 5: Solve for x
    x = 2,200,283,753.28/77,976.51
  6. Step 6: Final answer
    x = 28,217.26

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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.