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Finding the Fourth Proportional to 30,363.96, 45,569.52 and 21,069.24

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Solution

The fourth proportional to 30,363.96, 45,569.52 and 21,069.24 is: 31,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363.96 : 45,569.52 = 21,069.24 : x
  2. Step 2: Convert to fraction form
    30,363.96/45,569.52 = 21,069.24/x
  3. Step 3: Cross multiply
    30,363.96x = 45,569.52 × 21,069.24
  4. Step 4: Simplify right side
    30,363.96x = 960,115,153.56
  5. Step 5: Solve for x
    x = 960,115,153.56/30,363.96
  6. Step 6: Final answer
    x = 31,620.22

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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.