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Finding the Fourth Proportional to 68,439.60, 102,544.20 and 33,303.60

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Solution

The fourth proportional to 68,439.60, 102,544.20 and 33,303.60 is: 49,899.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,439.60 : 102,544.20 = 33,303.60 : x
  2. Step 2: Convert to fraction form
    68,439.60/102,544.20 = 33,303.60/x
  3. Step 3: Cross multiply
    68,439.60x = 102,544.20 × 33,303.60
  4. Step 4: Simplify right side
    68,439.60x = 3,415,091,019.12
  5. Step 5: Solve for x
    x = 3,415,091,019.12/68,439.60
  6. Step 6: Final answer
    x = 49,899.34

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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.