Home / 85,788.08-128,829.74-82,097.52

Finding the Fourth Proportional to 85,788.08, 128,829.74 and 82,097.52

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Solution

The fourth proportional to 85,788.08, 128,829.74 and 82,097.52 is: 123,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,788.08 : 128,829.74 = 82,097.52 : x
  2. Step 2: Convert to fraction form
    85,788.08/128,829.74 = 82,097.52/x
  3. Step 3: Cross multiply
    85,788.08x = 128,829.74 × 82,097.52
  4. Step 4: Simplify right side
    85,788.08x = 10,576,601,745.76
  5. Step 5: Solve for x
    x = 10,576,601,745.76/85,788.08
  6. Step 6: Final answer
    x = 123,287.55

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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.