Home / 85,781.40-118,349.96-51,776.97

Finding the Fourth Proportional to 85,781.40, 118,349.96 and 51,776.97

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Solution

The fourth proportional to 85,781.40, 118,349.96 and 51,776.97 is: 71,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,781.40 : 118,349.96 = 51,776.97 : x
  2. Step 2: Convert to fraction form
    85,781.40/118,349.96 = 51,776.97/x
  3. Step 3: Cross multiply
    85,781.40x = 118,349.96 × 51,776.97
  4. Step 4: Simplify right side
    85,781.40x = 6,127,801,625.72
  5. Step 5: Solve for x
    x = 6,127,801,625.72/85,781.40
  6. Step 6: Final answer
    x = 71,435.09

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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.