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Finding the Fourth Proportional to 28,978,054.80, 43,467,082.20 and 7,702,918.80

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Solution

The fourth proportional to 28,978,054.80, 43,467,082.20 and 7,702,918.80 is: 11,554,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,054.80 : 43,467,082.20 = 7,702,918.80 : x
  2. Step 2: Convert to fraction form
    28,978,054.80/43,467,082.20 = 7,702,918.80/x
  3. Step 3: Cross multiply
    28,978,054.80x = 43,467,082.20 × 7,702,918.80
  4. Step 4: Simplify right side
    28,978,054.80x = 334,823,404,659,525.38
  5. Step 5: Solve for x
    x = 334,823,404,659,525.38/28,978,054.80
  6. Step 6: Final answer
    x = 11,554,378.20

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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.