Home / 57,078.06-78,765.68-31,583.99

Finding the Fourth Proportional to 57,078.06, 78,765.68 and 31,583.99

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Solution

The fourth proportional to 57,078.06, 78,765.68 and 31,583.99 is: 43,584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,078.06 : 78,765.68 = 31,583.99 : x
  2. Step 2: Convert to fraction form
    57,078.06/78,765.68 = 31,583.99/x
  3. Step 3: Cross multiply
    57,078.06x = 78,765.68 × 31,583.99
  4. Step 4: Simplify right side
    57,078.06x = 2,487,734,055.63
  5. Step 5: Solve for x
    x = 2,487,734,055.63/57,078.06
  6. Step 6: Final answer
    x = 43,584.77

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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.