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Finding the Fourth Proportional to 55,308, 76,356.54 and 36,499.80

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Solution

The fourth proportional to 55,308, 76,356.54 and 36,499.80 is: 50,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,308 : 76,356.54 = 36,499.80 : x
  2. Step 2: Convert to fraction form
    55,308/76,356.54 = 36,499.80/x
  3. Step 3: Cross multiply
    55,308x = 76,356.54 × 36,499.80
  4. Step 4: Simplify right side
    55,308x = 2,786,998,438.69
  5. Step 5: Solve for x
    x = 2,786,998,438.69/55,308
  6. Step 6: Final answer
    x = 50,390.51

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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.