Home / 85,495.44-128,243.76-26,331.60

Finding the Fourth Proportional to 85,495.44, 128,243.76 and 26,331.60

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Solution

The fourth proportional to 85,495.44, 128,243.76 and 26,331.60 is: 39,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,495.44 : 128,243.76 = 26,331.60 : x
  2. Step 2: Convert to fraction form
    85,495.44/128,243.76 = 26,331.60/x
  3. Step 3: Cross multiply
    85,495.44x = 128,243.76 × 26,331.60
  4. Step 4: Simplify right side
    85,495.44x = 3,376,863,390.82
  5. Step 5: Solve for x
    x = 3,376,863,390.82/85,495.44
  6. Step 6: Final answer
    x = 39,497.58

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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.