Home / 77,678.14-107,183.38-43,686.52

Finding the Fourth Proportional to 77,678.14, 107,183.38 and 43,686.52

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Solution

The fourth proportional to 77,678.14, 107,183.38 and 43,686.52 is: 60,280.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,678.14 : 107,183.38 = 43,686.52 : x
  2. Step 2: Convert to fraction form
    77,678.14/107,183.38 = 43,686.52/x
  3. Step 3: Cross multiply
    77,678.14x = 107,183.38 × 43,686.52
  4. Step 4: Simplify right side
    77,678.14x = 4,682,468,496.86
  5. Step 5: Solve for x
    x = 4,682,468,496.86/77,678.14
  6. Step 6: Final answer
    x = 60,280.39

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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.