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Finding the Fourth Proportional to 30,685.92, 42,506.92 and 30,063.84

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Solution

The fourth proportional to 30,685.92, 42,506.92 and 30,063.84 is: 41,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.92 : 42,506.92 = 30,063.84 : x
  2. Step 2: Convert to fraction form
    30,685.92/42,506.92 = 30,063.84/x
  3. Step 3: Cross multiply
    30,685.92x = 42,506.92 × 30,063.84
  4. Step 4: Simplify right side
    30,685.92x = 1,277,921,241.77
  5. Step 5: Solve for x
    x = 1,277,921,241.77/30,685.92
  6. Step 6: Final answer
    x = 41,645.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.