Home / 84,678.36-126,991.60-58,551

Finding the Fourth Proportional to 84,678.36, 126,991.60 and 58,551

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Solution

The fourth proportional to 84,678.36, 126,991.60 and 58,551 is: 87,808.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,678.36 : 126,991.60 = 58,551 : x
  2. Step 2: Convert to fraction form
    84,678.36/126,991.60 = 58,551/x
  3. Step 3: Cross multiply
    84,678.36x = 126,991.60 × 58,551
  4. Step 4: Simplify right side
    84,678.36x = 7,435,485,171.60
  5. Step 5: Solve for x
    x = 7,435,485,171.60/84,678.36
  6. Step 6: Final answer
    x = 87,808.56

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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.