Home / 78,120.23-107,799.44-45,851.37

Finding the Fourth Proportional to 78,120.23, 107,799.44 and 45,851.37

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Solution

The fourth proportional to 78,120.23, 107,799.44 and 45,851.37 is: 63,271.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.23 : 107,799.44 = 45,851.37 : x
  2. Step 2: Convert to fraction form
    78,120.23/107,799.44 = 45,851.37/x
  3. Step 3: Cross multiply
    78,120.23x = 107,799.44 × 45,851.37
  4. Step 4: Simplify right side
    78,120.23x = 4,942,751,779.98
  5. Step 5: Solve for x
    x = 4,942,751,779.98/78,120.23
  6. Step 6: Final answer
    x = 63,271.09

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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.