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Finding the Fourth Proportional to 33,009,128.80, 49,401,718.80 and 28,978,050.40

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Solution

The fourth proportional to 33,009,128.80, 49,401,718.80 and 28,978,050.40 is: 43,368,775.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,009,128.80 : 49,401,718.80 = 28,978,050.40 : x
  2. Step 2: Convert to fraction form
    33,009,128.80/49,401,718.80 = 28,978,050.40/x
  3. Step 3: Cross multiply
    33,009,128.80x = 49,401,718.80 × 28,978,050.40
  4. Step 4: Simplify right side
    33,009,128.80x = 1,431,565,497,233,027.25
  5. Step 5: Solve for x
    x = 1,431,565,497,233,027.25/33,009,128.80
  6. Step 6: Final answer
    x = 43,368,775.53

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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.