Home / 57,054.34-78,728.93-31,556.65

Finding the Fourth Proportional to 57,054.34, 78,728.93 and 31,556.65

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Solution

The fourth proportional to 57,054.34, 78,728.93 and 31,556.65 is: 43,544.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,054.34 : 78,728.93 = 31,556.65 : x
  2. Step 2: Convert to fraction form
    57,054.34/78,728.93 = 31,556.65/x
  3. Step 3: Cross multiply
    57,054.34x = 78,728.93 × 31,556.65
  4. Step 4: Simplify right side
    57,054.34x = 2,484,421,288.88
  5. Step 5: Solve for x
    x = 2,484,421,288.88/57,054.34
  6. Step 6: Final answer
    x = 43,544.83

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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.