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Finding the Fourth Proportional to 79,467.68, 109,653.54 and 43,659.20

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Solution

The fourth proportional to 79,467.68, 109,653.54 and 43,659.20 is: 60,243.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,467.68 : 109,653.54 = 43,659.20 : x
  2. Step 2: Convert to fraction form
    79,467.68/109,653.54 = 43,659.20/x
  3. Step 3: Cross multiply
    79,467.68x = 109,653.54 × 43,659.20
  4. Step 4: Simplify right side
    79,467.68x = 4,787,385,833.57
  5. Step 5: Solve for x
    x = 4,787,385,833.57/79,467.68
  6. Step 6: Final answer
    x = 60,243.18

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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.