Home / 56,890.36-78,508.48-31,739.84

Finding the Fourth Proportional to 56,890.36, 78,508.48 and 31,739.84

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Solution

The fourth proportional to 56,890.36, 78,508.48 and 31,739.84 is: 43,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,890.36 : 78,508.48 = 31,739.84 : x
  2. Step 2: Convert to fraction form
    56,890.36/78,508.48 = 31,739.84/x
  3. Step 3: Cross multiply
    56,890.36x = 78,508.48 × 31,739.84
  4. Step 4: Simplify right side
    56,890.36x = 2,491,846,593.84
  5. Step 5: Solve for x
    x = 2,491,846,593.84/56,890.36
  6. Step 6: Final answer
    x = 43,800.86

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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.