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Finding the Fourth Proportional to 100,672.39, 151,009.49 and 30,551.70

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Solution

The fourth proportional to 100,672.39, 151,009.49 and 30,551.70 is: 45,827.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,672.39 : 151,009.49 = 30,551.70 : x
  2. Step 2: Convert to fraction form
    100,672.39/151,009.49 = 30,551.70/x
  3. Step 3: Cross multiply
    100,672.39x = 151,009.49 × 30,551.70
  4. Step 4: Simplify right side
    100,672.39x = 4,613,596,635.63
  5. Step 5: Solve for x
    x = 4,613,596,635.63/100,672.39
  6. Step 6: Final answer
    x = 45,827.82

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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.