Home / 56,680.62-78,220.73-31,187.64

Finding the Fourth Proportional to 56,680.62, 78,220.73 and 31,187.64

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Solution

The fourth proportional to 56,680.62, 78,220.73 and 31,187.64 is: 43,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,680.62 : 78,220.73 = 31,187.64 : x
  2. Step 2: Convert to fraction form
    56,680.62/78,220.73 = 31,187.64/x
  3. Step 3: Cross multiply
    56,680.62x = 78,220.73 × 31,187.64
  4. Step 4: Simplify right side
    56,680.62x = 2,439,519,811.84
  5. Step 5: Solve for x
    x = 2,439,519,811.84/56,680.62
  6. Step 6: Final answer
    x = 43,039.75

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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.