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Finding the Fourth Proportional to 43,403.90, 65,000.70 and 30,039.44

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Solution

The fourth proportional to 43,403.90, 65,000.70 and 30,039.44 is: 44,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,403.90 : 65,000.70 = 30,039.44 : x
  2. Step 2: Convert to fraction form
    43,403.90/65,000.70 = 30,039.44/x
  3. Step 3: Cross multiply
    43,403.90x = 65,000.70 × 30,039.44
  4. Step 4: Simplify right side
    43,403.90x = 1,952,584,302.60
  5. Step 5: Solve for x
    x = 1,952,584,302.60/43,403.90
  6. Step 6: Final answer
    x = 44,986.38

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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.