Home / 86,361.89-129,580.37-30,242.26

Finding the Fourth Proportional to 86,361.89, 129,580.37 and 30,242.26

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Solution

The fourth proportional to 86,361.89, 129,580.37 and 30,242.26 is: 45,376.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,361.89 : 129,580.37 = 30,242.26 : x
  2. Step 2: Convert to fraction form
    86,361.89/129,580.37 = 30,242.26/x
  3. Step 3: Cross multiply
    86,361.89x = 129,580.37 × 30,242.26
  4. Step 4: Simplify right side
    86,361.89x = 3,918,802,441.32
  5. Step 5: Solve for x
    x = 3,918,802,441.32/86,361.89
  6. Step 6: Final answer
    x = 45,376.52

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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.