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Finding the Fourth Proportional to 77,204.72, 115,824.10 and 43,940.46

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Solution

The fourth proportional to 77,204.72, 115,824.10 and 43,940.46 is: 65,920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,204.72 : 115,824.10 = 43,940.46 : x
  2. Step 2: Convert to fraction form
    77,204.72/115,824.10 = 43,940.46/x
  3. Step 3: Cross multiply
    77,204.72x = 115,824.10 × 43,940.46
  4. Step 4: Simplify right side
    77,204.72x = 5,089,364,233.09
  5. Step 5: Solve for x
    x = 5,089,364,233.09/77,204.72
  6. Step 6: Final answer
    x = 65,920.38

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1.5x scale

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.