Home / 56,477.21-77,939.15-30,983.61

Finding the Fourth Proportional to 56,477.21, 77,939.15 and 30,983.61

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Solution

The fourth proportional to 56,477.21, 77,939.15 and 30,983.61 is: 42,757.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,477.21 : 77,939.15 = 30,983.61 : x
  2. Step 2: Convert to fraction form
    56,477.21/77,939.15 = 30,983.61/x
  3. Step 3: Cross multiply
    56,477.21x = 77,939.15 × 30,983.61
  4. Step 4: Simplify right side
    56,477.21x = 2,414,836,072.41
  5. Step 5: Solve for x
    x = 2,414,836,072.41/56,477.21
  6. Step 6: Final answer
    x = 42,757.71

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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.