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Finding the Fourth Proportional to 30,100.50, 45,119.94 and 19,591.64

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Solution

The fourth proportional to 30,100.50, 45,119.94 and 19,591.64 is: 29,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,100.50 : 45,119.94 = 19,591.64 : x
  2. Step 2: Convert to fraction form
    30,100.50/45,119.94 = 19,591.64/x
  3. Step 3: Cross multiply
    30,100.50x = 45,119.94 × 19,591.64
  4. Step 4: Simplify right side
    30,100.50x = 883,973,395.70
  5. Step 5: Solve for x
    x = 883,973,395.70/30,100.50
  6. Step 6: Final answer
    x = 29,367.40

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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.