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Finding the Fourth Proportional to 30,505.55, 45,756.97 and 8,318.93

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Solution

The fourth proportional to 30,505.55, 45,756.97 and 8,318.93 is: 12,478.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,505.55 : 45,756.97 = 8,318.93 : x
  2. Step 2: Convert to fraction form
    30,505.55/45,756.97 = 8,318.93/x
  3. Step 3: Cross multiply
    30,505.55x = 45,756.97 × 8,318.93
  4. Step 4: Simplify right side
    30,505.55x = 380,649,030.44
  5. Step 5: Solve for x
    x = 380,649,030.44/30,505.55
  6. Step 6: Final answer
    x = 12,478.03

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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.