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Finding the Fourth Proportional to 43,879.78, 65,807.11 and 14,300.20

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Solution

The fourth proportional to 43,879.78, 65,807.11 and 14,300.20 is: 21,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,879.78 : 65,807.11 = 14,300.20 : x
  2. Step 2: Convert to fraction form
    43,879.78/65,807.11 = 14,300.20/x
  3. Step 3: Cross multiply
    43,879.78x = 65,807.11 × 14,300.20
  4. Step 4: Simplify right side
    43,879.78x = 941,054,634.15
  5. Step 5: Solve for x
    x = 941,054,634.15/43,879.78
  6. Step 6: Final answer
    x = 21,446.20

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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.