Home / 81,556.20-112,539.99-45,739.29

Finding the Fourth Proportional to 81,556.20, 112,539.99 and 45,739.29

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Solution

The fourth proportional to 81,556.20, 112,539.99 and 45,739.29 is: 63,115.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,556.20 : 112,539.99 = 45,739.29 : x
  2. Step 2: Convert to fraction form
    81,556.20/112,539.99 = 45,739.29/x
  3. Step 3: Cross multiply
    81,556.20x = 112,539.99 × 45,739.29
  4. Step 4: Simplify right side
    81,556.20x = 5,147,499,239.21
  5. Step 5: Solve for x
    x = 5,147,499,239.21/81,556.20
  6. Step 6: Final answer
    x = 63,115.98

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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.