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Finding the Fourth Proportional to 30,260.65, 45,390.97 and 8,074.11

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Solution

The fourth proportional to 30,260.65, 45,390.97 and 8,074.11 is: 12,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,260.65 : 45,390.97 = 8,074.11 : x
  2. Step 2: Convert to fraction form
    30,260.65/45,390.97 = 8,074.11/x
  3. Step 3: Cross multiply
    30,260.65x = 45,390.97 × 8,074.11
  4. Step 4: Simplify right side
    30,260.65x = 366,491,504.82
  5. Step 5: Solve for x
    x = 366,491,504.82/30,260.65
  6. Step 6: Final answer
    x = 12,111.16

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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.