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Finding the Fourth Proportional to 77,704.78, 107,232.43 and 43,713.29

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Solution

The fourth proportional to 77,704.78, 107,232.43 and 43,713.29 is: 60,324.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,704.78 : 107,232.43 = 43,713.29 : x
  2. Step 2: Convert to fraction form
    77,704.78/107,232.43 = 43,713.29/x
  3. Step 3: Cross multiply
    77,704.78x = 107,232.43 × 43,713.29
  4. Step 4: Simplify right side
    77,704.78x = 4,687,482,309.99
  5. Step 5: Solve for x
    x = 4,687,482,309.99/77,704.78
  6. Step 6: Final answer
    x = 60,324.25

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1.5x scale

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.