Home / 56,910.69-78,538.41-31,418.64

Finding the Fourth Proportional to 56,910.69, 78,538.41 and 31,418.64

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Solution

The fourth proportional to 56,910.69, 78,538.41 and 31,418.64 is: 43,358.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,910.69 : 78,538.41 = 31,418.64 : x
  2. Step 2: Convert to fraction form
    56,910.69/78,538.41 = 31,418.64/x
  3. Step 3: Cross multiply
    56,910.69x = 78,538.41 × 31,418.64
  4. Step 4: Simplify right side
    56,910.69x = 2,467,570,029.96
  5. Step 5: Solve for x
    x = 2,467,570,029.96/56,910.69
  6. Step 6: Final answer
    x = 43,358.64

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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.