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Finding the Fourth Proportional to 79,115.08, 109,178 and 43,304.72

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Solution

The fourth proportional to 79,115.08, 109,178 and 43,304.72 is: 59,760.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,115.08 : 109,178 = 43,304.72 : x
  2. Step 2: Convert to fraction form
    79,115.08/109,178 = 43,304.72/x
  3. Step 3: Cross multiply
    79,115.08x = 109,178 × 43,304.72
  4. Step 4: Simplify right side
    79,115.08x = 4,727,922,720.16
  5. Step 5: Solve for x
    x = 4,727,922,720.16/79,115.08
  6. Step 6: Final answer
    x = 59,760.07

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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.