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Finding the Fourth Proportional to 85,992.84, 118,670.55 and 49,691.37

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Solution

The fourth proportional to 85,992.84, 118,670.55 and 49,691.37 is: 68,574.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,992.84 : 118,670.55 = 49,691.37 : x
  2. Step 2: Convert to fraction form
    85,992.84/118,670.55 = 49,691.37/x
  3. Step 3: Cross multiply
    85,992.84x = 118,670.55 × 49,691.37
  4. Step 4: Simplify right side
    85,992.84x = 5,896,902,208.15
  5. Step 5: Solve for x
    x = 5,896,902,208.15/85,992.84
  6. Step 6: Final answer
    x = 68,574.34

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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.