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Finding the Fourth Proportional to 127,991.57, 191,965.47 and 34,475.45

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Solution

The fourth proportional to 127,991.57, 191,965.47 and 34,475.45 is: 51,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,991.57 : 191,965.47 = 34,475.45 : x
  2. Step 2: Convert to fraction form
    127,991.57/191,965.47 = 34,475.45/x
  3. Step 3: Cross multiply
    127,991.57x = 191,965.47 × 34,475.45
  4. Step 4: Simplify right side
    127,991.57x = 6,618,095,002.88
  5. Step 5: Solve for x
    x = 6,618,095,002.88/127,991.57
  6. Step 6: Final answer
    x = 51,707.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.