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Finding the Fourth Proportional to 74,415.70, 111,661.82 and 41,129.56

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Solution

The fourth proportional to 74,415.70, 111,661.82 and 41,129.56 is: 61,715.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,415.70 : 111,661.82 = 41,129.56 : x
  2. Step 2: Convert to fraction form
    74,415.70/111,661.82 = 41,129.56/x
  3. Step 3: Cross multiply
    74,415.70x = 111,661.82 × 41,129.56
  4. Step 4: Simplify right side
    74,415.70x = 4,592,601,525.40
  5. Step 5: Solve for x
    x = 4,592,601,525.40/74,415.70
  6. Step 6: Final answer
    x = 61,715.49

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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.