Home / 79,884.02-110,705.97-78,756.50

Finding the Fourth Proportional to 79,884.02, 110,705.97 and 78,756.50

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Solution

The fourth proportional to 79,884.02, 110,705.97 and 78,756.50 is: 109,143.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,884.02 : 110,705.97 = 78,756.50 : x
  2. Step 2: Convert to fraction form
    79,884.02/110,705.97 = 78,756.50/x
  3. Step 3: Cross multiply
    79,884.02x = 110,705.97 × 78,756.50
  4. Step 4: Simplify right side
    79,884.02x = 8,718,814,529.41
  5. Step 5: Solve for x
    x = 8,718,814,529.41/79,884.02
  6. Step 6: Final answer
    x = 109,143.41

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.