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Finding the Fourth Proportional to 43,605.54, 65,315.25 and 21,082.14

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Solution

The fourth proportional to 43,605.54, 65,315.25 and 21,082.14 is: 31,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,605.54 : 65,315.25 = 21,082.14 : x
  2. Step 2: Convert to fraction form
    43,605.54/65,315.25 = 21,082.14/x
  3. Step 3: Cross multiply
    43,605.54x = 65,315.25 × 21,082.14
  4. Step 4: Simplify right side
    43,605.54x = 1,376,985,244.64
  5. Step 5: Solve for x
    x = 1,376,985,244.64/43,605.54
  6. Step 6: Final answer
    x = 31,578.22

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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.