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Finding the Fourth Proportional to 69,000.56, 103,474.57 and 45,301.77

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Solution

The fourth proportional to 69,000.56, 103,474.57 and 45,301.77 is: 67,935.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,000.56 : 103,474.57 = 45,301.77 : x
  2. Step 2: Convert to fraction form
    69,000.56/103,474.57 = 45,301.77/x
  3. Step 3: Cross multiply
    69,000.56x = 103,474.57 × 45,301.77
  4. Step 4: Simplify right side
    69,000.56x = 4,687,581,118.54
  5. Step 5: Solve for x
    x = 4,687,581,118.54/69,000.56
  6. Step 6: Final answer
    x = 67,935.41

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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.