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Finding the Fourth Proportional to 85,371.44, 117,801.72 and 47,647.28

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Solution

The fourth proportional to 85,371.44, 117,801.72 and 47,647.28 is: 65,747.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,371.44 : 117,801.72 = 47,647.28 : x
  2. Step 2: Convert to fraction form
    85,371.44/117,801.72 = 47,647.28/x
  3. Step 3: Cross multiply
    85,371.44x = 117,801.72 × 47,647.28
  4. Step 4: Simplify right side
    85,371.44x = 5,612,931,537.32
  5. Step 5: Solve for x
    x = 5,612,931,537.32/85,371.44
  6. Step 6: Final answer
    x = 65,747.18

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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.