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Finding the Fourth Proportional to 30,147.80, 45,221.70 and 24,315.80

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Solution

The fourth proportional to 30,147.80, 45,221.70 and 24,315.80 is: 36,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.80 : 45,221.70 = 24,315.80 : x
  2. Step 2: Convert to fraction form
    30,147.80/45,221.70 = 24,315.80/x
  3. Step 3: Cross multiply
    30,147.80x = 45,221.70 × 24,315.80
  4. Step 4: Simplify right side
    30,147.80x = 1,099,601,812.86
  5. Step 5: Solve for x
    x = 1,099,601,812.86/30,147.80
  6. Step 6: Final answer
    x = 36,473.70

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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.