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Finding the Fourth Proportional to 43,144.98, 64,720.98 and 11,980.26

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Solution

The fourth proportional to 43,144.98, 64,720.98 and 11,980.26 is: 17,971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,144.98 : 64,720.98 = 11,980.26 : x
  2. Step 2: Convert to fraction form
    43,144.98/64,720.98 = 11,980.26/x
  3. Step 3: Cross multiply
    43,144.98x = 64,720.98 × 11,980.26
  4. Step 4: Simplify right side
    43,144.98x = 775,374,167.85
  5. Step 5: Solve for x
    x = 775,374,167.85/43,144.98
  6. Step 6: Final answer
    x = 17,971.36

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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.