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Finding the Fourth Proportional to 30,425.94, 41,682.78 and 29,288.79

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Solution

The fourth proportional to 30,425.94, 41,682.78 and 29,288.79 is: 40,124.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,425.94 : 41,682.78 = 29,288.79 : x
  2. Step 2: Convert to fraction form
    30,425.94/41,682.78 = 29,288.79/x
  3. Step 3: Cross multiply
    30,425.94x = 41,682.78 × 29,288.79
  4. Step 4: Simplify right side
    30,425.94x = 1,220,838,190.04
  5. Step 5: Solve for x
    x = 1,220,838,190.04/30,425.94
  6. Step 6: Final answer
    x = 40,124.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.