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Finding the Fourth Proportional to 85,354.58, 117,761.90 and 47,621.54

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Solution

The fourth proportional to 85,354.58, 117,761.90 and 47,621.54 is: 65,702.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,354.58 : 117,761.90 = 47,621.54 : x
  2. Step 2: Convert to fraction form
    85,354.58/117,761.90 = 47,621.54/x
  3. Step 3: Cross multiply
    85,354.58x = 117,761.90 × 47,621.54
  4. Step 4: Simplify right side
    85,354.58x = 5,608,003,031.33
  5. Step 5: Solve for x
    x = 5,608,003,031.33/85,354.58
  6. Step 6: Final answer
    x = 65,702.43

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1.5x scale

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.