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Finding the Fourth Proportional to 28,978,230.40, 43,467,345.60 and 25,954,921.60

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Solution

The fourth proportional to 28,978,230.40, 43,467,345.60 and 25,954,921.60 is: 38,932,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,230.40 : 43,467,345.60 = 25,954,921.60 : x
  2. Step 2: Convert to fraction form
    28,978,230.40/43,467,345.60 = 25,954,921.60/x
  3. Step 3: Cross multiply
    28,978,230.40x = 43,467,345.60 × 25,954,921.60
  4. Step 4: Simplify right side
    28,978,230.40x = 1,128,191,547,208,105
  5. Step 5: Solve for x
    x = 1,128,191,547,208,105/28,978,230.40
  6. Step 6: Final answer
    x = 38,932,382.40

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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.