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Finding the Fourth Proportional to 79,196.70, 109,293.40 and 43,386.80

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Solution

The fourth proportional to 79,196.70, 109,293.40 and 43,386.80 is: 59,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,196.70 : 109,293.40 = 43,386.80 : x
  2. Step 2: Convert to fraction form
    79,196.70/109,293.40 = 43,386.80/x
  3. Step 3: Cross multiply
    79,196.70x = 109,293.40 × 43,386.80
  4. Step 4: Simplify right side
    79,196.70x = 4,741,890,887.12
  5. Step 5: Solve for x
    x = 4,741,890,887.12/79,196.70
  6. Step 6: Final answer
    x = 59,874.85

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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.