Home / 56,739.76-78,300.26-31,245.64

Finding the Fourth Proportional to 56,739.76, 78,300.26 and 31,245.64

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Solution

The fourth proportional to 56,739.76, 78,300.26 and 31,245.64 is: 43,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,739.76 : 78,300.26 = 31,245.64 : x
  2. Step 2: Convert to fraction form
    56,739.76/78,300.26 = 31,245.64/x
  3. Step 3: Cross multiply
    56,739.76x = 78,300.26 × 31,245.64
  4. Step 4: Simplify right side
    56,739.76x = 2,446,541,735.87
  5. Step 5: Solve for x
    x = 2,446,541,735.87/56,739.76
  6. Step 6: Final answer
    x = 43,118.65

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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.