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Finding the Fourth Proportional to 51,102.70, 76,656.70 and 15,561.28

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Solution

The fourth proportional to 51,102.70, 76,656.70 and 15,561.28 is: 23,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,102.70 : 76,656.70 = 15,561.28 : x
  2. Step 2: Convert to fraction form
    51,102.70/76,656.70 = 15,561.28/x
  3. Step 3: Cross multiply
    51,102.70x = 76,656.70 × 15,561.28
  4. Step 4: Simplify right side
    51,102.70x = 1,192,876,208.22
  5. Step 5: Solve for x
    x = 1,192,876,208.22/51,102.70
  6. Step 6: Final answer
    x = 23,342.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.