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Finding the Fourth Proportional to 66,090.40, 99,135.60 and 32,816.80

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Solution

The fourth proportional to 66,090.40, 99,135.60 and 32,816.80 is: 49,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,090.40 : 99,135.60 = 32,816.80 : x
  2. Step 2: Convert to fraction form
    66,090.40/99,135.60 = 32,816.80/x
  3. Step 3: Cross multiply
    66,090.40x = 99,135.60 × 32,816.80
  4. Step 4: Simplify right side
    66,090.40x = 3,253,313,158.08
  5. Step 5: Solve for x
    x = 3,253,313,158.08/66,090.40
  6. Step 6: Final answer
    x = 49,225.20

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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.