Home / 85,447.09-128,170.94-26,282.36

Finding the Fourth Proportional to 85,447.09, 128,170.94 and 26,282.36

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Solution

The fourth proportional to 85,447.09, 128,170.94 and 26,282.36 is: 39,423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,447.09 : 128,170.94 = 26,282.36 : x
  2. Step 2: Convert to fraction form
    85,447.09/128,170.94 = 26,282.36/x
  3. Step 3: Cross multiply
    85,447.09x = 128,170.94 × 26,282.36
  4. Step 4: Simplify right side
    85,447.09x = 3,368,634,786.62
  5. Step 5: Solve for x
    x = 3,368,634,786.62/85,447.09
  6. Step 6: Final answer
    x = 39,423.63

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1.5x scale

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.