Home / 51,981.11-71,733.99-28,107.78

Finding the Fourth Proportional to 51,981.11, 71,733.99 and 28,107.78

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Solution

The fourth proportional to 51,981.11, 71,733.99 and 28,107.78 is: 38,788.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,981.11 : 71,733.99 = 28,107.78 : x
  2. Step 2: Convert to fraction form
    51,981.11/71,733.99 = 28,107.78/x
  3. Step 3: Cross multiply
    51,981.11x = 71,733.99 × 28,107.78
  4. Step 4: Simplify right side
    51,981.11x = 2,016,283,209.44
  5. Step 5: Solve for x
    x = 2,016,283,209.44/51,981.11
  6. Step 6: Final answer
    x = 38,788.77

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1.5x scale

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.