Home / 76,918.96-115,372.98-20,762.26

Finding the Fourth Proportional to 76,918.96, 115,372.98 and 20,762.26

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Solution

The fourth proportional to 76,918.96, 115,372.98 and 20,762.26 is: 31,141.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,918.96 : 115,372.98 = 20,762.26 : x
  2. Step 2: Convert to fraction form
    76,918.96/115,372.98 = 20,762.26/x
  3. Step 3: Cross multiply
    76,918.96x = 115,372.98 × 20,762.26
  4. Step 4: Simplify right side
    76,918.96x = 2,395,403,807.73
  5. Step 5: Solve for x
    x = 2,395,403,807.73/76,918.96
  6. Step 6: Final answer
    x = 31,141.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.