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Finding the Fourth Proportional to 30,668.57, 45,994.34 and 8,480.24

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Solution

The fourth proportional to 30,668.57, 45,994.34 and 8,480.24 is: 12,718.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,668.57 : 45,994.34 = 8,480.24 : x
  2. Step 2: Convert to fraction form
    30,668.57/45,994.34 = 8,480.24/x
  3. Step 3: Cross multiply
    30,668.57x = 45,994.34 × 8,480.24
  4. Step 4: Simplify right side
    30,668.57x = 390,042,833.07
  5. Step 5: Solve for x
    x = 390,042,833.07/30,668.57
  6. Step 6: Final answer
    x = 12,718.00

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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.