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Finding the Fourth Proportional to 69,331.60, 104,014.20 and 20,083.60

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Solution

The fourth proportional to 69,331.60, 104,014.20 and 20,083.60 is: 30,130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,331.60 : 104,014.20 = 20,083.60 : x
  2. Step 2: Convert to fraction form
    69,331.60/104,014.20 = 20,083.60/x
  3. Step 3: Cross multiply
    69,331.60x = 104,014.20 × 20,083.60
  4. Step 4: Simplify right side
    69,331.60x = 2,088,979,587.12
  5. Step 5: Solve for x
    x = 2,088,979,587.12/69,331.60
  6. Step 6: Final answer
    x = 30,130.27

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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.