Home / 69,143.67-103,711.86-19,226.61

Finding the Fourth Proportional to 69,143.67, 103,711.86 and 19,226.61

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Solution

The fourth proportional to 69,143.67, 103,711.86 and 19,226.61 is: 28,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,143.67 : 103,711.86 = 19,226.61 : x
  2. Step 2: Convert to fraction form
    69,143.67/103,711.86 = 19,226.61/x
  3. Step 3: Cross multiply
    69,143.67x = 103,711.86 × 19,226.61
  4. Step 4: Simplify right side
    69,143.67x = 1,994,027,484.59
  5. Step 5: Solve for x
    x = 1,994,027,484.59/69,143.67
  6. Step 6: Final answer
    x = 28,838.90

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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.