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Finding the Fourth Proportional to 45,350.70, 68,002.71 and 20,369.31

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Solution

The fourth proportional to 45,350.70, 68,002.71 and 20,369.31 is: 30,543.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,350.70 : 68,002.71 = 20,369.31 : x
  2. Step 2: Convert to fraction form
    45,350.70/68,002.71 = 20,369.31/x
  3. Step 3: Cross multiply
    45,350.70x = 68,002.71 × 20,369.31
  4. Step 4: Simplify right side
    45,350.70x = 1,385,168,408.19
  5. Step 5: Solve for x
    x = 1,385,168,408.19/45,350.70
  6. Step 6: Final answer
    x = 30,543.49

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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.