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Finding the Fourth Proportional to 101,704.81, 140,360.03 and 61,428.37

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Solution

The fourth proportional to 101,704.81, 140,360.03 and 61,428.37 is: 84,775.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,704.81 : 140,360.03 = 61,428.37 : x
  2. Step 2: Convert to fraction form
    101,704.81/140,360.03 = 61,428.37/x
  3. Step 3: Cross multiply
    101,704.81x = 140,360.03 × 61,428.37
  4. Step 4: Simplify right side
    101,704.81x = 8,622,087,548.91
  5. Step 5: Solve for x
    x = 8,622,087,548.91/101,704.81
  6. Step 6: Final answer
    x = 84,775.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.