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Finding the Fourth Proportional to 61,079.37, 91,614.70 and 18,958.44

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Solution

The fourth proportional to 61,079.37, 91,614.70 and 18,958.44 is: 28,436.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,079.37 : 91,614.70 = 18,958.44 : x
  2. Step 2: Convert to fraction form
    61,079.37/91,614.70 = 18,958.44/x
  3. Step 3: Cross multiply
    61,079.37x = 91,614.70 × 18,958.44
  4. Step 4: Simplify right side
    61,079.37x = 1,736,871,793.07
  5. Step 5: Solve for x
    x = 1,736,871,793.07/61,079.37
  6. Step 6: Final answer
    x = 28,436.31

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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.