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Finding the Fourth Proportional to 30,049.53, 45,075.45 and 8,989.87

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Solution

The fourth proportional to 30,049.53, 45,075.45 and 8,989.87 is: 13,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,049.53 : 45,075.45 = 8,989.87 : x
  2. Step 2: Convert to fraction form
    30,049.53/45,075.45 = 8,989.87/x
  3. Step 3: Cross multiply
    30,049.53x = 45,075.45 × 8,989.87
  4. Step 4: Simplify right side
    30,049.53x = 405,222,435.69
  5. Step 5: Solve for x
    x = 405,222,435.69/30,049.53
  6. Step 6: Final answer
    x = 13,485.15

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1.5x scale

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.