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Finding the Fourth Proportional to 77,608.71, 116,578.89 and 55,563.75

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Solution

The fourth proportional to 77,608.71, 116,578.89 and 55,563.75 is: 83,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,608.71 : 116,578.89 = 55,563.75 : x
  2. Step 2: Convert to fraction form
    77,608.71/116,578.89 = 55,563.75/x
  3. Step 3: Cross multiply
    77,608.71x = 116,578.89 × 55,563.75
  4. Step 4: Simplify right side
    77,608.71x = 6,477,560,299.24
  5. Step 5: Solve for x
    x = 6,477,560,299.24/77,608.71
  6. Step 6: Final answer
    x = 83,464.35

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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.