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Finding the Fourth Proportional to 86,189.28, 118,942.68 and 47,951.88

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Solution

The fourth proportional to 86,189.28, 118,942.68 and 47,951.88 is: 66,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,189.28 : 118,942.68 = 47,951.88 : x
  2. Step 2: Convert to fraction form
    86,189.28/118,942.68 = 47,951.88/x
  3. Step 3: Cross multiply
    86,189.28x = 118,942.68 × 47,951.88
  4. Step 4: Simplify right side
    86,189.28x = 5,703,525,118.24
  5. Step 5: Solve for x
    x = 5,703,525,118.24/86,189.28
  6. Step 6: Final answer
    x = 66,174.41

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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.