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Finding the Fourth Proportional to 77,287.92, 107,203.00 and 75,239.43

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Solution

The fourth proportional to 77,287.92, 107,203.00 and 75,239.43 is: 104,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,287.92 : 107,203.00 = 75,239.43 : x
  2. Step 2: Convert to fraction form
    77,287.92/107,203.00 = 75,239.43/x
  3. Step 3: Cross multiply
    77,287.92x = 107,203.00 × 75,239.43
  4. Step 4: Simplify right side
    77,287.92x = 8,065,892,238.09
  5. Step 5: Solve for x
    x = 8,065,892,238.09/77,287.92
  6. Step 6: Final answer
    x = 104,361.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.