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Finding the Fourth Proportional to 30,503.46, 45,750.57 and 8,318.64

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Solution

The fourth proportional to 30,503.46, 45,750.57 and 8,318.64 is: 12,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.46 : 45,750.57 = 8,318.64 : x
  2. Step 2: Convert to fraction form
    30,503.46/45,750.57 = 8,318.64/x
  3. Step 3: Cross multiply
    30,503.46x = 45,750.57 × 8,318.64
  4. Step 4: Simplify right side
    30,503.46x = 380,582,521.62
  5. Step 5: Solve for x
    x = 380,582,521.62/30,503.46
  6. Step 6: Final answer
    x = 12,476.70

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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.