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Finding the Fourth Proportional to 69,328.60, 104,009.70 and 20,080.60

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Solution

The fourth proportional to 69,328.60, 104,009.70 and 20,080.60 is: 30,125.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,328.60 : 104,009.70 = 20,080.60 : x
  2. Step 2: Convert to fraction form
    69,328.60/104,009.70 = 20,080.60/x
  3. Step 3: Cross multiply
    69,328.60x = 104,009.70 × 20,080.60
  4. Step 4: Simplify right side
    69,328.60x = 2,088,577,181.82
  5. Step 5: Solve for x
    x = 2,088,577,181.82/69,328.60
  6. Step 6: Final answer
    x = 30,125.77

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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.