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Finding the Fourth Proportional to 30,720.38, 46,082.65 and 10,448.88

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Solution

The fourth proportional to 30,720.38, 46,082.65 and 10,448.88 is: 15,674.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.38 : 46,082.65 = 10,448.88 : x
  2. Step 2: Convert to fraction form
    30,720.38/46,082.65 = 10,448.88/x
  3. Step 3: Cross multiply
    30,720.38x = 46,082.65 × 10,448.88
  4. Step 4: Simplify right side
    30,720.38x = 481,512,053.81
  5. Step 5: Solve for x
    x = 481,512,053.81/30,720.38
  6. Step 6: Final answer
    x = 15,674.03

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.