Home / 56,874.14-78,485.79-31,380.74

Finding the Fourth Proportional to 56,874.14, 78,485.79 and 31,380.74

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Solution

The fourth proportional to 56,874.14, 78,485.79 and 31,380.74 is: 43,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,874.14 : 78,485.79 = 31,380.74 : x
  2. Step 2: Convert to fraction form
    56,874.14/78,485.79 = 31,380.74/x
  3. Step 3: Cross multiply
    56,874.14x = 78,485.79 × 31,380.74
  4. Step 4: Simplify right side
    56,874.14x = 2,462,942,169.68
  5. Step 5: Solve for x
    x = 2,462,942,169.68/56,874.14
  6. Step 6: Final answer
    x = 43,305.13

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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.