Home / 77,979.88-116,949.04-21,816.48

Finding the Fourth Proportional to 77,979.88, 116,949.04 and 21,816.48

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Solution

The fourth proportional to 77,979.88, 116,949.04 and 21,816.48 is: 32,718.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,979.88 : 116,949.04 = 21,816.48 : x
  2. Step 2: Convert to fraction form
    77,979.88/116,949.04 = 21,816.48/x
  3. Step 3: Cross multiply
    77,979.88x = 116,949.04 × 21,816.48
  4. Step 4: Simplify right side
    77,979.88x = 2,551,416,392.18
  5. Step 5: Solve for x
    x = 2,551,416,392.18/77,979.88
  6. Step 6: Final answer
    x = 32,718.91

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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.