Home / 56,872.75-78,484.40-31,722.25

Finding the Fourth Proportional to 56,872.75, 78,484.40 and 31,722.25

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Solution

The fourth proportional to 56,872.75, 78,484.40 and 31,722.25 is: 43,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,872.75 : 78,484.40 = 31,722.25 : x
  2. Step 2: Convert to fraction form
    56,872.75/78,484.40 = 31,722.25/x
  3. Step 3: Cross multiply
    56,872.75x = 78,484.40 × 31,722.25
  4. Step 4: Simplify right side
    56,872.75x = 2,489,701,757.90
  5. Step 5: Solve for x
    x = 2,489,701,757.90/56,872.75
  6. Step 6: Final answer
    x = 43,776.71

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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.