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Finding the Fourth Proportional to 72,069.72, 108,104.58 and 19,480.56

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Solution

The fourth proportional to 72,069.72, 108,104.58 and 19,480.56 is: 29,220.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,069.72 : 108,104.58 = 19,480.56 : x
  2. Step 2: Convert to fraction form
    72,069.72/108,104.58 = 19,480.56/x
  3. Step 3: Cross multiply
    72,069.72x = 108,104.58 × 19,480.56
  4. Step 4: Simplify right side
    72,069.72x = 2,105,937,756.96
  5. Step 5: Solve for x
    x = 2,105,937,756.96/72,069.72
  6. Step 6: Final answer
    x = 29,220.84

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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.