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Finding the Fourth Proportional to 55,128.36, 76,119.99 and 42,361.41

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Solution

The fourth proportional to 55,128.36, 76,119.99 and 42,361.41 is: 58,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.36 : 76,119.99 = 42,361.41 : x
  2. Step 2: Convert to fraction form
    55,128.36/76,119.99 = 42,361.41/x
  3. Step 3: Cross multiply
    55,128.36x = 76,119.99 × 42,361.41
  4. Step 4: Simplify right side
    55,128.36x = 3,224,550,232.18
  5. Step 5: Solve for x
    x = 3,224,550,232.18/55,128.36
  6. Step 6: Final answer
    x = 58,491.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.