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Finding the Fourth Proportional to 69,981.64, 104,940.87 and 20,050.30

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Solution

The fourth proportional to 69,981.64, 104,940.87 and 20,050.30 is: 30,066.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,981.64 : 104,940.87 = 20,050.30 : x
  2. Step 2: Convert to fraction form
    69,981.64/104,940.87 = 20,050.30/x
  3. Step 3: Cross multiply
    69,981.64x = 104,940.87 × 20,050.30
  4. Step 4: Simplify right side
    69,981.64x = 2,104,095,981.75
  5. Step 5: Solve for x
    x = 2,104,095,981.75/69,981.64
  6. Step 6: Final answer
    x = 30,066.40

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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.