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Finding the Fourth Proportional to 69,969.55, 104,953.80 and 20,049.69

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Solution

The fourth proportional to 69,969.55, 104,953.80 and 20,049.69 is: 30,074.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,969.55 : 104,953.80 = 20,049.69 : x
  2. Step 2: Convert to fraction form
    69,969.55/104,953.80 = 20,049.69/x
  3. Step 3: Cross multiply
    69,969.55x = 104,953.80 × 20,049.69
  4. Step 4: Simplify right side
    69,969.55x = 2,104,291,154.32
  5. Step 5: Solve for x
    x = 2,104,291,154.32/69,969.55
  6. Step 6: Final answer
    x = 30,074.38

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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.