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Finding the Fourth Proportional to 85,398.63, 117,849.51 and 47,160.56

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Solution

The fourth proportional to 85,398.63, 117,849.51 and 47,160.56 is: 65,081.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.63 : 117,849.51 = 47,160.56 : x
  2. Step 2: Convert to fraction form
    85,398.63/117,849.51 = 47,160.56/x
  3. Step 3: Cross multiply
    85,398.63x = 117,849.51 × 47,160.56
  4. Step 4: Simplify right side
    85,398.63x = 5,557,848,298.08
  5. Step 5: Solve for x
    x = 5,557,848,298.08/85,398.63
  6. Step 6: Final answer
    x = 65,081.23

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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.