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Finding the Fourth Proportional to 85,246.53, 127,906.67 and 45,757.55

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Solution

The fourth proportional to 85,246.53, 127,906.67 and 45,757.55 is: 68,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,246.53 : 127,906.67 = 45,757.55 : x
  2. Step 2: Convert to fraction form
    85,246.53/127,906.67 = 45,757.55/x
  3. Step 3: Cross multiply
    85,246.53x = 127,906.67 × 45,757.55
  4. Step 4: Simplify right side
    85,246.53x = 5,852,695,322.72
  5. Step 5: Solve for x
    x = 5,852,695,322.72/85,246.53
  6. Step 6: Final answer
    x = 68,656.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.