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Finding the Fourth Proportional to 57,611.52, 86,728.52 and 51,818.24

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Solution

The fourth proportional to 57,611.52, 86,728.52 and 51,818.24 is: 78,007.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,611.52 : 86,728.52 = 51,818.24 : x
  2. Step 2: Convert to fraction form
    57,611.52/86,728.52 = 51,818.24/x
  3. Step 3: Cross multiply
    57,611.52x = 86,728.52 × 51,818.24
  4. Step 4: Simplify right side
    57,611.52x = 4,494,118,571.47
  5. Step 5: Solve for x
    x = 4,494,118,571.47/57,611.52
  6. Step 6: Final answer
    x = 78,007.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.