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Finding the Fourth Proportional to 55,759.86, 76,893.84 and 51,149.88

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Solution

The fourth proportional to 55,759.86, 76,893.84 and 51,149.88 is: 70,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,759.86 : 76,893.84 = 51,149.88 : x
  2. Step 2: Convert to fraction form
    55,759.86/76,893.84 = 51,149.88/x
  3. Step 3: Cross multiply
    55,759.86x = 76,893.84 × 51,149.88
  4. Step 4: Simplify right side
    55,759.86x = 3,933,110,688.74
  5. Step 5: Solve for x
    x = 3,933,110,688.74/55,759.86
  6. Step 6: Final answer
    x = 70,536.60

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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.