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Finding the Fourth Proportional to 30,266.70, 45,346.05 and 14,649.90

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Solution

The fourth proportional to 30,266.70, 45,346.05 and 14,649.90 is: 21,948.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,266.70 : 45,346.05 = 14,649.90 : x
  2. Step 2: Convert to fraction form
    30,266.70/45,346.05 = 14,649.90/x
  3. Step 3: Cross multiply
    30,266.70x = 45,346.05 × 14,649.90
  4. Step 4: Simplify right side
    30,266.70x = 664,315,097.90
  5. Step 5: Solve for x
    x = 664,315,097.90/30,266.70
  6. Step 6: Final answer
    x = 21,948.71

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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.