Home / 56,811.09-78,399.87-31,318.44

Finding the Fourth Proportional to 56,811.09, 78,399.87 and 31,318.44

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Solution

The fourth proportional to 56,811.09, 78,399.87 and 31,318.44 is: 43,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,811.09 : 78,399.87 = 31,318.44 : x
  2. Step 2: Convert to fraction form
    56,811.09/78,399.87 = 31,318.44/x
  3. Step 3: Cross multiply
    56,811.09x = 78,399.87 × 31,318.44
  4. Step 4: Simplify right side
    56,811.09x = 2,455,361,624.60
  5. Step 5: Solve for x
    x = 2,455,361,624.60/56,811.09
  6. Step 6: Final answer
    x = 43,219.76

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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.