Home / 85,331.49-128,021.81-26,175.84

Finding the Fourth Proportional to 85,331.49, 128,021.81 and 26,175.84

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Solution

The fourth proportional to 85,331.49, 128,021.81 and 26,175.84 is: 39,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,331.49 : 128,021.81 = 26,175.84 : x
  2. Step 2: Convert to fraction form
    85,331.49/128,021.81 = 26,175.84/x
  3. Step 3: Cross multiply
    85,331.49x = 128,021.81 × 26,175.84
  4. Step 4: Simplify right side
    85,331.49x = 3,351,078,284.19
  5. Step 5: Solve for x
    x = 3,351,078,284.19/85,331.49
  6. Step 6: Final answer
    x = 39,271.30

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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.