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Finding the Fourth Proportional to 51,067.87, 70,473.66 and 28,711.87

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Solution

The fourth proportional to 51,067.87, 70,473.66 and 28,711.87 is: 39,622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,067.87 : 70,473.66 = 28,711.87 : x
  2. Step 2: Convert to fraction form
    51,067.87/70,473.66 = 28,711.87/x
  3. Step 3: Cross multiply
    51,067.87x = 70,473.66 × 28,711.87
  4. Step 4: Simplify right side
    51,067.87x = 2,023,430,564.34
  5. Step 5: Solve for x
    x = 2,023,430,564.34/51,067.87
  6. Step 6: Final answer
    x = 39,622.38

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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.