Home / 51,911.87-71,639.04-30,690.95

Finding the Fourth Proportional to 51,911.87, 71,639.04 and 30,690.95

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Solution

The fourth proportional to 51,911.87, 71,639.04 and 30,690.95 is: 42,353.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,911.87 : 71,639.04 = 30,690.95 : x
  2. Step 2: Convert to fraction form
    51,911.87/71,639.04 = 30,690.95/x
  3. Step 3: Cross multiply
    51,911.87x = 71,639.04 × 30,690.95
  4. Step 4: Simplify right side
    51,911.87x = 2,198,669,836.49
  5. Step 5: Solve for x
    x = 2,198,669,836.49/51,911.87
  6. Step 6: Final answer
    x = 42,353.90

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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.