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Finding the Fourth Proportional to 30,617.52, 45,920.22 and 8,425.16

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Solution

The fourth proportional to 30,617.52, 45,920.22 and 8,425.16 is: 12,636.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,617.52 : 45,920.22 = 8,425.16 : x
  2. Step 2: Convert to fraction form
    30,617.52/45,920.22 = 8,425.16/x
  3. Step 3: Cross multiply
    30,617.52x = 45,920.22 × 8,425.16
  4. Step 4: Simplify right side
    30,617.52x = 386,885,200.74
  5. Step 5: Solve for x
    x = 386,885,200.74/30,617.52
  6. Step 6: Final answer
    x = 12,636.07

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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.