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Finding the Fourth Proportional to 85,916, 118,564.15 and 48,190.25

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Solution

The fourth proportional to 85,916, 118,564.15 and 48,190.25 is: 66,502.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,916 : 118,564.15 = 48,190.25 : x
  2. Step 2: Convert to fraction form
    85,916/118,564.15 = 48,190.25/x
  3. Step 3: Cross multiply
    85,916x = 118,564.15 × 48,190.25
  4. Step 4: Simplify right side
    85,916x = 5,713,636,029.54
  5. Step 5: Solve for x
    x = 5,713,636,029.54/85,916
  6. Step 6: Final answer
    x = 66,502.58

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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.