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Finding the Fourth Proportional to 51,067.72, 70,474.08 and 28,711.72

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Solution

The fourth proportional to 51,067.72, 70,474.08 and 28,711.72 is: 39,622.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,067.72 : 70,474.08 = 28,711.72 : x
  2. Step 2: Convert to fraction form
    51,067.72/70,474.08 = 28,711.72/x
  3. Step 3: Cross multiply
    51,067.72x = 70,474.08 × 28,711.72
  4. Step 4: Simplify right side
    51,067.72x = 2,023,432,052.22
  5. Step 5: Solve for x
    x = 2,023,432,052.22/51,067.72
  6. Step 6: Final answer
    x = 39,622.53

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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.