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Finding the Fourth Proportional to 30,575.88, 45,786.06 and 28,009.80

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Solution

The fourth proportional to 30,575.88, 45,786.06 and 28,009.80 is: 41,943.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,575.88 : 45,786.06 = 28,009.80 : x
  2. Step 2: Convert to fraction form
    30,575.88/45,786.06 = 28,009.80/x
  3. Step 3: Cross multiply
    30,575.88x = 45,786.06 × 28,009.80
  4. Step 4: Simplify right side
    30,575.88x = 1,282,458,383.39
  5. Step 5: Solve for x
    x = 1,282,458,383.39/30,575.88
  6. Step 6: Final answer
    x = 41,943.47

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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.