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Finding the Fourth Proportional to 30,197.56, 45,285 and 10,471.36

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Solution

The fourth proportional to 30,197.56, 45,285 and 10,471.36 is: 15,703.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,197.56 : 45,285 = 10,471.36 : x
  2. Step 2: Convert to fraction form
    30,197.56/45,285 = 10,471.36/x
  3. Step 3: Cross multiply
    30,197.56x = 45,285 × 10,471.36
  4. Step 4: Simplify right side
    30,197.56x = 474,195,537.60
  5. Step 5: Solve for x
    x = 474,195,537.60/30,197.56
  6. Step 6: Final answer
    x = 15,703.11

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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.