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Finding the Fourth Proportional to 79,140.70, 118,726.44 and 25,847.56

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Solution

The fourth proportional to 79,140.70, 118,726.44 and 25,847.56 is: 38,776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,140.70 : 118,726.44 = 25,847.56 : x
  2. Step 2: Convert to fraction form
    79,140.70/118,726.44 = 25,847.56/x
  3. Step 3: Cross multiply
    79,140.70x = 118,726.44 × 25,847.56
  4. Step 4: Simplify right side
    79,140.70x = 3,068,788,781.49
  5. Step 5: Solve for x
    x = 3,068,788,781.49/79,140.70
  6. Step 6: Final answer
    x = 38,776.37

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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.