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Finding the Fourth Proportional to 69,327.60, 104,008.20 and 20,079.60

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Solution

The fourth proportional to 69,327.60, 104,008.20 and 20,079.60 is: 30,124.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,327.60 : 104,008.20 = 20,079.60 : x
  2. Step 2: Convert to fraction form
    69,327.60/104,008.20 = 20,079.60/x
  3. Step 3: Cross multiply
    69,327.60x = 104,008.20 × 20,079.60
  4. Step 4: Simplify right side
    69,327.60x = 2,088,443,052.72
  5. Step 5: Solve for x
    x = 2,088,443,052.72/69,327.60
  6. Step 6: Final answer
    x = 30,124.27

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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.