Home / 85,786.23-128,647.76-29,611.92

Finding the Fourth Proportional to 85,786.23, 128,647.76 and 29,611.92

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Solution

The fourth proportional to 85,786.23, 128,647.76 and 29,611.92 is: 44,406.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,786.23 : 128,647.76 = 29,611.92 : x
  2. Step 2: Convert to fraction form
    85,786.23/128,647.76 = 29,611.92/x
  3. Step 3: Cross multiply
    85,786.23x = 128,647.76 × 29,611.92
  4. Step 4: Simplify right side
    85,786.23x = 3,809,507,029.24
  5. Step 5: Solve for x
    x = 3,809,507,029.24/85,786.23
  6. Step 6: Final answer
    x = 44,406.98

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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.