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Finding the Fourth Proportional to 30,081.84, 45,129.03 and 9,021.03

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Solution

The fourth proportional to 30,081.84, 45,129.03 and 9,021.03 is: 13,533.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081.84 : 45,129.03 = 9,021.03 : x
  2. Step 2: Convert to fraction form
    30,081.84/45,129.03 = 9,021.03/x
  3. Step 3: Cross multiply
    30,081.84x = 45,129.03 × 9,021.03
  4. Step 4: Simplify right side
    30,081.84x = 407,110,333.50
  5. Step 5: Solve for x
    x = 407,110,333.50/30,081.84
  6. Step 6: Final answer
    x = 13,533.43

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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.