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Finding the Fourth Proportional to 30,065.74, 45,114.17 and 21,813.87

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Solution

The fourth proportional to 30,065.74, 45,114.17 and 21,813.87 is: 32,732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,065.74 : 45,114.17 = 21,813.87 : x
  2. Step 2: Convert to fraction form
    30,065.74/45,114.17 = 21,813.87/x
  3. Step 3: Cross multiply
    30,065.74x = 45,114.17 × 21,813.87
  4. Step 4: Simplify right side
    30,065.74x = 984,114,639.54
  5. Step 5: Solve for x
    x = 984,114,639.54/30,065.74
  6. Step 6: Final answer
    x = 32,732.09

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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.