Home / 58,638.15-80,920.44-31,781.31

Finding the Fourth Proportional to 58,638.15, 80,920.44 and 31,781.31

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Solution

The fourth proportional to 58,638.15, 80,920.44 and 31,781.31 is: 43,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,638.15 : 80,920.44 = 31,781.31 : x
  2. Step 2: Convert to fraction form
    58,638.15/80,920.44 = 31,781.31/x
  3. Step 3: Cross multiply
    58,638.15x = 80,920.44 × 31,781.31
  4. Step 4: Simplify right side
    58,638.15x = 2,571,757,588.98
  5. Step 5: Solve for x
    x = 2,571,757,588.98/58,638.15
  6. Step 6: Final answer
    x = 43,858.10

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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.