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Finding the Fourth Proportional to 79,188.68, 109,280.39 and 43,379.97

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Solution

The fourth proportional to 79,188.68, 109,280.39 and 43,379.97 is: 59,864.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,188.68 : 109,280.39 = 43,379.97 : x
  2. Step 2: Convert to fraction form
    79,188.68/109,280.39 = 43,379.97/x
  3. Step 3: Cross multiply
    79,188.68x = 109,280.39 × 43,379.97
  4. Step 4: Simplify right side
    79,188.68x = 4,740,580,148.24
  5. Step 5: Solve for x
    x = 4,740,580,148.24/79,188.68
  6. Step 6: Final answer
    x = 59,864.37

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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.