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Finding the Fourth Proportional to 69,412.80, 104,119.20 and 27,889.60

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Solution

The fourth proportional to 69,412.80, 104,119.20 and 27,889.60 is: 41,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,412.80 : 104,119.20 = 27,889.60 : x
  2. Step 2: Convert to fraction form
    69,412.80/104,119.20 = 27,889.60/x
  3. Step 3: Cross multiply
    69,412.80x = 104,119.20 × 27,889.60
  4. Step 4: Simplify right side
    69,412.80x = 2,903,842,840.32
  5. Step 5: Solve for x
    x = 2,903,842,840.32/69,412.80
  6. Step 6: Final answer
    x = 41,834.40

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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.