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Finding the Fourth Proportional to 30,302.55, 45,474.56 and 10,581.10

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Solution

The fourth proportional to 30,302.55, 45,474.56 and 10,581.10 is: 15,878.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,302.55 : 45,474.56 = 10,581.10 : x
  2. Step 2: Convert to fraction form
    30,302.55/45,474.56 = 10,581.10/x
  3. Step 3: Cross multiply
    30,302.55x = 45,474.56 × 10,581.10
  4. Step 4: Simplify right side
    30,302.55x = 481,170,866.82
  5. Step 5: Solve for x
    x = 481,170,866.82/30,302.55
  6. Step 6: Final answer
    x = 15,878.89

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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.