Home / 85,450.30-128,164.39-26,284.66

Finding the Fourth Proportional to 85,450.30, 128,164.39 and 26,284.66

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Solution

The fourth proportional to 85,450.30, 128,164.39 and 26,284.66 is: 39,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,450.30 : 128,164.39 = 26,284.66 : x
  2. Step 2: Convert to fraction form
    85,450.30/128,164.39 = 26,284.66/x
  3. Step 3: Cross multiply
    85,450.30x = 128,164.39 × 26,284.66
  4. Step 4: Simplify right side
    85,450.30x = 3,368,757,415.26
  5. Step 5: Solve for x
    x = 3,368,757,415.26/85,450.30
  6. Step 6: Final answer
    x = 39,423.59

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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.