Home / 91,029.72-136,525.14-28,685.64

Finding the Fourth Proportional to 91,029.72, 136,525.14 and 28,685.64

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Solution

The fourth proportional to 91,029.72, 136,525.14 and 28,685.64 is: 43,022.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,029.72 : 136,525.14 = 28,685.64 : x
  2. Step 2: Convert to fraction form
    91,029.72/136,525.14 = 28,685.64/x
  3. Step 3: Cross multiply
    91,029.72x = 136,525.14 × 28,685.64
  4. Step 4: Simplify right side
    91,029.72x = 3,916,311,016.99
  5. Step 5: Solve for x
    x = 3,916,311,016.99/91,029.72
  6. Step 6: Final answer
    x = 43,022.33

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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.