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Finding the Fourth Proportional to 69,145.40, 103,723.54 and 34,065.92

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Solution

The fourth proportional to 69,145.40, 103,723.54 and 34,065.92 is: 51,101.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,145.40 : 103,723.54 = 34,065.92 : x
  2. Step 2: Convert to fraction form
    69,145.40/103,723.54 = 34,065.92/x
  3. Step 3: Cross multiply
    69,145.40x = 103,723.54 × 34,065.92
  4. Step 4: Simplify right side
    69,145.40x = 3,533,437,815.76
  5. Step 5: Solve for x
    x = 3,533,437,815.76/69,145.40
  6. Step 6: Final answer
    x = 51,101.56

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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.