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Finding the Fourth Proportional to 79,550.53, 109,780.14 and 43,742.85

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Solution

The fourth proportional to 79,550.53, 109,780.14 and 43,742.85 is: 60,365.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,550.53 : 109,780.14 = 43,742.85 : x
  2. Step 2: Convert to fraction form
    79,550.53/109,780.14 = 43,742.85/x
  3. Step 3: Cross multiply
    79,550.53x = 109,780.14 × 43,742.85
  4. Step 4: Simplify right side
    79,550.53x = 4,802,096,197.00
  5. Step 5: Solve for x
    x = 4,802,096,197.00/79,550.53
  6. Step 6: Final answer
    x = 60,365.36

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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.