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Finding the Fourth Proportional to 85,855.18, 118,480.44 and 48,127

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Solution

The fourth proportional to 85,855.18, 118,480.44 and 48,127 is: 66,415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,855.18 : 118,480.44 = 48,127 : x
  2. Step 2: Convert to fraction form
    85,855.18/118,480.44 = 48,127/x
  3. Step 3: Cross multiply
    85,855.18x = 118,480.44 × 48,127
  4. Step 4: Simplify right side
    85,855.18x = 5,702,108,135.88
  5. Step 5: Solve for x
    x = 5,702,108,135.88/85,855.18
  6. Step 6: Final answer
    x = 66,415.42

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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.