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Finding the Fourth Proportional to 85,606.82, 118,137.81 and 47,881.07

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Solution

The fourth proportional to 85,606.82, 118,137.81 and 47,881.07 is: 66,076.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,606.82 : 118,137.81 = 47,881.07 : x
  2. Step 2: Convert to fraction form
    85,606.82/118,137.81 = 47,881.07/x
  3. Step 3: Cross multiply
    85,606.82x = 118,137.81 × 47,881.07
  4. Step 4: Simplify right side
    85,606.82x = 5,656,563,920.16
  5. Step 5: Solve for x
    x = 5,656,563,920.16/85,606.82
  6. Step 6: Final answer
    x = 66,076.09

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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.