Home / 77,786.46-116,504.64-54,516.78

Finding the Fourth Proportional to 77,786.46, 116,504.64 and 54,516.78

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Solution

The fourth proportional to 77,786.46, 116,504.64 and 54,516.78 is: 81,652.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,786.46 : 116,504.64 = 54,516.78 : x
  2. Step 2: Convert to fraction form
    77,786.46/116,504.64 = 54,516.78/x
  3. Step 3: Cross multiply
    77,786.46x = 116,504.64 × 54,516.78
  4. Step 4: Simplify right side
    77,786.46x = 6,351,457,827.86
  5. Step 5: Solve for x
    x = 6,351,457,827.86/77,786.46
  6. Step 6: Final answer
    x = 81,652.49

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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.