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Finding the Fourth Proportional to 57,866.25, 79,855.91 and 31,370.25

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Solution

The fourth proportional to 57,866.25, 79,855.91 and 31,370.25 is: 43,291.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,866.25 : 79,855.91 = 31,370.25 : x
  2. Step 2: Convert to fraction form
    57,866.25/79,855.91 = 31,370.25/x
  3. Step 3: Cross multiply
    57,866.25x = 79,855.91 × 31,370.25
  4. Step 4: Simplify right side
    57,866.25x = 2,505,099,703.83
  5. Step 5: Solve for x
    x = 2,505,099,703.83/57,866.25
  6. Step 6: Final answer
    x = 43,291.21

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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.