Home / 79,902.24-109,465.92-76,911.36

Finding the Fourth Proportional to 79,902.24, 109,465.92 and 76,911.36

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Solution

The fourth proportional to 79,902.24, 109,465.92 and 76,911.36 is: 105,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,902.24 : 109,465.92 = 76,911.36 : x
  2. Step 2: Convert to fraction form
    79,902.24/109,465.92 = 76,911.36/x
  3. Step 3: Cross multiply
    79,902.24x = 109,465.92 × 76,911.36
  4. Step 4: Simplify right side
    79,902.24x = 8,419,172,780.85
  5. Step 5: Solve for x
    x = 8,419,172,780.85/79,902.24
  6. Step 6: Final answer
    x = 105,368.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.