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Finding the Fourth Proportional to 81,630.60, 122,445.90 and 26,232.20

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Solution

The fourth proportional to 81,630.60, 122,445.90 and 26,232.20 is: 39,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,630.60 : 122,445.90 = 26,232.20 : x
  2. Step 2: Convert to fraction form
    81,630.60/122,445.90 = 26,232.20/x
  3. Step 3: Cross multiply
    81,630.60x = 122,445.90 × 26,232.20
  4. Step 4: Simplify right side
    81,630.60x = 3,212,025,337.98
  5. Step 5: Solve for x
    x = 3,212,025,337.98/81,630.60
  6. Step 6: Final answer
    x = 39,348.30

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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.