Home / 56,874.36-78,486.40-31,723.84

Finding the Fourth Proportional to 56,874.36, 78,486.40 and 31,723.84

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Solution

The fourth proportional to 56,874.36, 78,486.40 and 31,723.84 is: 43,778.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,874.36 : 78,486.40 = 31,723.84 : x
  2. Step 2: Convert to fraction form
    56,874.36/78,486.40 = 31,723.84/x
  3. Step 3: Cross multiply
    56,874.36x = 78,486.40 × 31,723.84
  4. Step 4: Simplify right side
    56,874.36x = 2,489,889,995.78
  5. Step 5: Solve for x
    x = 2,489,889,995.78/56,874.36
  6. Step 6: Final answer
    x = 43,778.78

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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.