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Finding the Fourth Proportional to 79,181.88, 109,272.69 and 43,373.40

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Solution

The fourth proportional to 79,181.88, 109,272.69 and 43,373.40 is: 59,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,181.88 : 109,272.69 = 43,373.40 : x
  2. Step 2: Convert to fraction form
    79,181.88/109,272.69 = 43,373.40/x
  3. Step 3: Cross multiply
    79,181.88x = 109,272.69 × 43,373.40
  4. Step 4: Simplify right side
    79,181.88x = 4,739,528,092.45
  5. Step 5: Solve for x
    x = 4,739,528,092.45/79,181.88
  6. Step 6: Final answer
    x = 59,856.22

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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.