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Finding the Fourth Proportional to 84,906.90, 127,360.35 and 45,540.90

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Solution

The fourth proportional to 84,906.90, 127,360.35 and 45,540.90 is: 68,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,906.90 : 127,360.35 = 45,540.90 : x
  2. Step 2: Convert to fraction form
    84,906.90/127,360.35 = 45,540.90/x
  3. Step 3: Cross multiply
    84,906.90x = 127,360.35 × 45,540.90
  4. Step 4: Simplify right side
    84,906.90x = 5,800,104,963.32
  5. Step 5: Solve for x
    x = 5,800,104,963.32/84,906.90
  6. Step 6: Final answer
    x = 68,311.35

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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.