Home / 79,712.04-109,205.97-76,722.60

Finding the Fourth Proportional to 79,712.04, 109,205.97 and 76,722.60

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Solution

The fourth proportional to 79,712.04, 109,205.97 and 76,722.60 is: 105,110.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,712.04 : 109,205.97 = 76,722.60 : x
  2. Step 2: Convert to fraction form
    79,712.04/109,205.97 = 76,722.60/x
  3. Step 3: Cross multiply
    79,712.04x = 109,205.97 × 76,722.60
  4. Step 4: Simplify right side
    79,712.04x = 8,378,565,953.92
  5. Step 5: Solve for x
    x = 8,378,565,953.92/79,712.04
  6. Step 6: Final answer
    x = 105,110.42

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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.