Home / 77,080.11-115,606.52-20,924.58

Finding the Fourth Proportional to 77,080.11, 115,606.52 and 20,924.58

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Solution

The fourth proportional to 77,080.11, 115,606.52 and 20,924.58 is: 31,383.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,080.11 : 115,606.52 = 20,924.58 : x
  2. Step 2: Convert to fraction form
    77,080.11/115,606.52 = 20,924.58/x
  3. Step 3: Cross multiply
    77,080.11x = 115,606.52 × 20,924.58
  4. Step 4: Simplify right side
    77,080.11x = 2,419,017,771.64
  5. Step 5: Solve for x
    x = 2,419,017,771.64/77,080.11
  6. Step 6: Final answer
    x = 31,383.16

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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.