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Finding the Fourth Proportional to 56,755, 78,322.44 and 31,605.04

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Solution

The fourth proportional to 56,755, 78,322.44 and 31,605.04 is: 43,615.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,755 : 78,322.44 = 31,605.04 : x
  2. Step 2: Convert to fraction form
    56,755/78,322.44 = 31,605.04/x
  3. Step 3: Cross multiply
    56,755x = 78,322.44 × 31,605.04
  4. Step 4: Simplify right side
    56,755x = 2,475,383,849.10
  5. Step 5: Solve for x
    x = 2,475,383,849.10/56,755
  6. Step 6: Final answer
    x = 43,615.26

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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.