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Finding the Fourth Proportional to 85,191.43, 117,550.44 and 49,374.55

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Solution

The fourth proportional to 85,191.43, 117,550.44 and 49,374.55 is: 68,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,191.43 : 117,550.44 = 49,374.55 : x
  2. Step 2: Convert to fraction form
    85,191.43/117,550.44 = 49,374.55/x
  3. Step 3: Cross multiply
    85,191.43x = 117,550.44 × 49,374.55
  4. Step 4: Simplify right side
    85,191.43x = 5,804,000,077.30
  5. Step 5: Solve for x
    x = 5,804,000,077.30/85,191.43
  6. Step 6: Final answer
    x = 68,128.92

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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.