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Finding the Fourth Proportional to 30,450.53, 45,685.01 and 21,583.01

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Solution

The fourth proportional to 30,450.53, 45,685.01 and 21,583.01 is: 32,381.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,450.53 : 45,685.01 = 21,583.01 : x
  2. Step 2: Convert to fraction form
    30,450.53/45,685.01 = 21,583.01/x
  3. Step 3: Cross multiply
    30,450.53x = 45,685.01 × 21,583.01
  4. Step 4: Simplify right side
    30,450.53x = 986,019,938.87
  5. Step 5: Solve for x
    x = 986,019,938.87/30,450.53
  6. Step 6: Final answer
    x = 32,381.04

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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.