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Finding the Fourth Proportional to 85,791.54, 118,397.02 and 47,555.61

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Solution

The fourth proportional to 85,791.54, 118,397.02 and 47,555.61 is: 65,629.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,791.54 : 118,397.02 = 47,555.61 : x
  2. Step 2: Convert to fraction form
    85,791.54/118,397.02 = 47,555.61/x
  3. Step 3: Cross multiply
    85,791.54x = 118,397.02 × 47,555.61
  4. Step 4: Simplify right side
    85,791.54x = 5,630,442,508.28
  5. Step 5: Solve for x
    x = 5,630,442,508.28/85,791.54
  6. Step 6: Final answer
    x = 65,629.34

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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.