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Finding the Fourth Proportional to 72,893.48, 109,374.78 and 43,369.64

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Solution

The fourth proportional to 72,893.48, 109,374.78 and 43,369.64 is: 65,075.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,893.48 : 109,374.78 = 43,369.64 : x
  2. Step 2: Convert to fraction form
    72,893.48/109,374.78 = 43,369.64/x
  3. Step 3: Cross multiply
    72,893.48x = 109,374.78 × 43,369.64
  4. Step 4: Simplify right side
    72,893.48x = 4,743,544,833.68
  5. Step 5: Solve for x
    x = 4,743,544,833.68/72,893.48
  6. Step 6: Final answer
    x = 65,075.02

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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.