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Finding the Fourth Proportional to 55,635, 76,776.30 and 33,279

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Solution

The fourth proportional to 55,635, 76,776.30 and 33,279 is: 45,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,635 : 76,776.30 = 33,279 : x
  2. Step 2: Convert to fraction form
    55,635/76,776.30 = 33,279/x
  3. Step 3: Cross multiply
    55,635x = 76,776.30 × 33,279
  4. Step 4: Simplify right side
    55,635x = 2,555,038,487.70
  5. Step 5: Solve for x
    x = 2,555,038,487.70/55,635
  6. Step 6: Final answer
    x = 45,925.02

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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.