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Finding the Fourth Proportional to 55,812, 77,021.10 and 30,662.04

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Solution

The fourth proportional to 55,812, 77,021.10 and 30,662.04 is: 42,313.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,812 : 77,021.10 = 30,662.04 : x
  2. Step 2: Convert to fraction form
    55,812/77,021.10 = 30,662.04/x
  3. Step 3: Cross multiply
    55,812x = 77,021.10 × 30,662.04
  4. Step 4: Simplify right side
    55,812x = 2,361,624,049.04
  5. Step 5: Solve for x
    x = 2,361,624,049.04/55,812
  6. Step 6: Final answer
    x = 42,313.91

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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.