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Finding the Fourth Proportional to 86,662.60, 130,018.20 and 36,766.60

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Solution

The fourth proportional to 86,662.60, 130,018.20 and 36,766.60 is: 55,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,662.60 : 130,018.20 = 36,766.60 : x
  2. Step 2: Convert to fraction form
    86,662.60/130,018.20 = 36,766.60/x
  3. Step 3: Cross multiply
    86,662.60x = 130,018.20 × 36,766.60
  4. Step 4: Simplify right side
    86,662.60x = 4,780,327,152.12
  5. Step 5: Solve for x
    x = 4,780,327,152.12/86,662.60
  6. Step 6: Final answer
    x = 55,160.21

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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.