Home / 91,419.36-126,159-51,133.84

Finding the Fourth Proportional to 91,419.36, 126,159 and 51,133.84

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Solution

The fourth proportional to 91,419.36, 126,159 and 51,133.84 is: 70,564.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,419.36 : 126,159 = 51,133.84 : x
  2. Step 2: Convert to fraction form
    91,419.36/126,159 = 51,133.84/x
  3. Step 3: Cross multiply
    91,419.36x = 126,159 × 51,133.84
  4. Step 4: Simplify right side
    91,419.36x = 6,450,994,120.56
  5. Step 5: Solve for x
    x = 6,450,994,120.56/91,419.36
  6. Step 6: Final answer
    x = 70,564.86

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Why These Related Problems?

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