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Finding the Fourth Proportional to 30,672.70, 45,785.21 and 26,318.14

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Solution

The fourth proportional to 30,672.70, 45,785.21 and 26,318.14 is: 39,285.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.70 : 45,785.21 = 26,318.14 : x
  2. Step 2: Convert to fraction form
    30,672.70/45,785.21 = 26,318.14/x
  3. Step 3: Cross multiply
    30,672.70x = 45,785.21 × 26,318.14
  4. Step 4: Simplify right side
    30,672.70x = 1,204,981,566.71
  5. Step 5: Solve for x
    x = 1,204,981,566.71/30,672.70
  6. Step 6: Final answer
    x = 39,285.15

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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.