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Finding the Fourth Proportional to 50,756.80, 76,060.16 and 45,220.80

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Solution

The fourth proportional to 50,756.80, 76,060.16 and 45,220.80 is: 67,764.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,756.80 : 76,060.16 = 45,220.80 : x
  2. Step 2: Convert to fraction form
    50,756.80/76,060.16 = 45,220.80/x
  3. Step 3: Cross multiply
    50,756.80x = 76,060.16 × 45,220.80
  4. Step 4: Simplify right side
    50,756.80x = 3,439,501,283.33
  5. Step 5: Solve for x
    x = 3,439,501,283.33/50,756.80
  6. Step 6: Final answer
    x = 67,764.34

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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.