Home / 56,811.24-78,399.90-31,662.36

Finding the Fourth Proportional to 56,811.24, 78,399.90 and 31,662.36

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Solution

The fourth proportional to 56,811.24, 78,399.90 and 31,662.36 is: 43,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,811.24 : 78,399.90 = 31,662.36 : x
  2. Step 2: Convert to fraction form
    56,811.24/78,399.90 = 31,662.36/x
  3. Step 3: Cross multiply
    56,811.24x = 78,399.90 × 31,662.36
  4. Step 4: Simplify right side
    56,811.24x = 2,482,325,857.76
  5. Step 5: Solve for x
    x = 2,482,325,857.76/56,811.24
  6. Step 6: Final answer
    x = 43,694.27

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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.