Home / 77,861,960.80-107,412,921.32-55,539,880.56

Finding the Fourth Proportional to 77,861,960.80, 107,412,921.32 and 55,539,880.56

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Solution

The fourth proportional to 77,861,960.80, 107,412,921.32 and 55,539,880.56 is: 76,618,938.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,861,960.80 : 107,412,921.32 = 55,539,880.56 : x
  2. Step 2: Convert to fraction form
    77,861,960.80/107,412,921.32 = 55,539,880.56/x
  3. Step 3: Cross multiply
    77,861,960.80x = 107,412,921.32 × 55,539,880.56
  4. Step 4: Simplify right side
    77,861,960.80x = 5,965,700,820,435,778
  5. Step 5: Solve for x
    x = 5,965,700,820,435,778/77,861,960.80
  6. Step 6: Final answer
    x = 76,618,938.94

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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.