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Finding the Fourth Proportional to 30,412.20, 45,622.64 and 9,354

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Solution

The fourth proportional to 30,412.20, 45,622.64 and 9,354 is: 14,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,412.20 : 45,622.64 = 9,354 : x
  2. Step 2: Convert to fraction form
    30,412.20/45,622.64 = 9,354/x
  3. Step 3: Cross multiply
    30,412.20x = 45,622.64 × 9,354
  4. Step 4: Simplify right side
    30,412.20x = 426,754,174.56
  5. Step 5: Solve for x
    x = 426,754,174.56/30,412.20
  6. Step 6: Final answer
    x = 14,032.33

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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.