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Finding the Fourth Proportional to 77,928, 107,598.29 and 47,754.56

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Solution

The fourth proportional to 77,928, 107,598.29 and 47,754.56 is: 65,936.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,928 : 107,598.29 = 47,754.56 : x
  2. Step 2: Convert to fraction form
    77,928/107,598.29 = 47,754.56/x
  3. Step 3: Cross multiply
    77,928x = 107,598.29 × 47,754.56
  4. Step 4: Simplify right side
    77,928x = 5,138,308,218.94
  5. Step 5: Solve for x
    x = 5,138,308,218.94/77,928
  6. Step 6: Final answer
    x = 65,936.61

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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.