Home / 77,840.14-107,387.55-57,470.98

Finding the Fourth Proportional to 77,840.14, 107,387.55 and 57,470.98

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Solution

The fourth proportional to 77,840.14, 107,387.55 and 57,470.98 is: 79,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,840.14 : 107,387.55 = 57,470.98 : x
  2. Step 2: Convert to fraction form
    77,840.14/107,387.55 = 57,470.98/x
  3. Step 3: Cross multiply
    77,840.14x = 107,387.55 × 57,470.98
  4. Step 4: Simplify right side
    77,840.14x = 6,171,667,738.30
  5. Step 5: Solve for x
    x = 6,171,667,738.30/77,840.14
  6. Step 6: Final answer
    x = 79,286.44

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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.