Home / 89,023.70-122,910.06-79,447.20

Finding the Fourth Proportional to 89,023.70, 122,910.06 and 79,447.20

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Solution

The fourth proportional to 89,023.70, 122,910.06 and 79,447.20 is: 109,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,023.70 : 122,910.06 = 79,447.20 : x
  2. Step 2: Convert to fraction form
    89,023.70/122,910.06 = 79,447.20/x
  3. Step 3: Cross multiply
    89,023.70x = 122,910.06 × 79,447.20
  4. Step 4: Simplify right side
    89,023.70x = 9,764,860,118.83
  5. Step 5: Solve for x
    x = 9,764,860,118.83/89,023.70
  6. Step 6: Final answer
    x = 109,688.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.