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Finding the Fourth Proportional to 74,123.88, 111,190.78 and 26,086.78

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Solution

The fourth proportional to 74,123.88, 111,190.78 and 26,086.78 is: 39,131.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,123.88 : 111,190.78 = 26,086.78 : x
  2. Step 2: Convert to fraction form
    74,123.88/111,190.78 = 26,086.78/x
  3. Step 3: Cross multiply
    74,123.88x = 111,190.78 × 26,086.78
  4. Step 4: Simplify right side
    74,123.88x = 2,900,609,415.89
  5. Step 5: Solve for x
    x = 2,900,609,415.89/74,123.88
  6. Step 6: Final answer
    x = 39,131.92

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1.5x scale

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.