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Finding the Fourth Proportional to 79,451.58, 109,660.65 and 54,956.85

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Solution

The fourth proportional to 79,451.58, 109,660.65 and 54,956.85 is: 75,852.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,451.58 : 109,660.65 = 54,956.85 : x
  2. Step 2: Convert to fraction form
    79,451.58/109,660.65 = 54,956.85/x
  3. Step 3: Cross multiply
    79,451.58x = 109,660.65 × 54,956.85
  4. Step 4: Simplify right side
    79,451.58x = 6,026,603,892.95
  5. Step 5: Solve for x
    x = 6,026,603,892.95/79,451.58
  6. Step 6: Final answer
    x = 75,852.54

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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.