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Finding the Fourth Proportional to 81,627.60, 122,311.80 and 60,632.40

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Solution

The fourth proportional to 81,627.60, 122,311.80 and 60,632.40 is: 90,852.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,627.60 : 122,311.80 = 60,632.40 : x
  2. Step 2: Convert to fraction form
    81,627.60/122,311.80 = 60,632.40/x
  3. Step 3: Cross multiply
    81,627.60x = 122,311.80 × 60,632.40
  4. Step 4: Simplify right side
    81,627.60x = 7,416,057,982.32
  5. Step 5: Solve for x
    x = 7,416,057,982.32/81,627.60
  6. Step 6: Final answer
    x = 90,852.33

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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.