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Finding the Fourth Proportional to 51,282.72, 70,722.72 and 39,346.56

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Solution

The fourth proportional to 51,282.72, 70,722.72 and 39,346.56 is: 54,261.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,282.72 : 70,722.72 = 39,346.56 : x
  2. Step 2: Convert to fraction form
    51,282.72/70,722.72 = 39,346.56/x
  3. Step 3: Cross multiply
    51,282.72x = 70,722.72 × 39,346.56
  4. Step 4: Simplify right side
    51,282.72x = 2,782,695,745.84
  5. Step 5: Solve for x
    x = 2,782,695,745.84/51,282.72
  6. Step 6: Final answer
    x = 54,261.86

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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.