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Finding the Fourth Proportional to 30,266.65, 45,399.98 and 8,080.11

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Solution

The fourth proportional to 30,266.65, 45,399.98 and 8,080.11 is: 12,120.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,266.65 : 45,399.98 = 8,080.11 : x
  2. Step 2: Convert to fraction form
    30,266.65/45,399.98 = 8,080.11/x
  3. Step 3: Cross multiply
    30,266.65x = 45,399.98 × 8,080.11
  4. Step 4: Simplify right side
    30,266.65x = 366,836,832.40
  5. Step 5: Solve for x
    x = 366,836,832.40/30,266.65
  6. Step 6: Final answer
    x = 12,120.17

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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.