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Finding the Fourth Proportional to 30,378.70, 45,286.42 and 29,898.92

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Solution

The fourth proportional to 30,378.70, 45,286.42 and 29,898.92 is: 44,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.70 : 45,286.42 = 29,898.92 : x
  2. Step 2: Convert to fraction form
    30,378.70/45,286.42 = 29,898.92/x
  3. Step 3: Cross multiply
    30,378.70x = 45,286.42 × 29,898.92
  4. Step 4: Simplify right side
    30,378.70x = 1,354,015,048.67
  5. Step 5: Solve for x
    x = 1,354,015,048.67/30,378.70
  6. Step 6: Final answer
    x = 44,571.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.