Home / 43,316.96-64,971.09-21,145.64

Finding the Fourth Proportional to 43,316.96, 64,971.09 and 21,145.64

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Solution

The fourth proportional to 43,316.96, 64,971.09 and 21,145.64 is: 31,716.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,316.96 : 64,971.09 = 21,145.64 : x
  2. Step 2: Convert to fraction form
    43,316.96/64,971.09 = 21,145.64/x
  3. Step 3: Cross multiply
    43,316.96x = 64,971.09 × 21,145.64
  4. Step 4: Simplify right side
    43,316.96x = 1,373,854,954.69
  5. Step 5: Solve for x
    x = 1,373,854,954.69/43,316.96
  6. Step 6: Final answer
    x = 31,716.33

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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.