Home / 89,556.06-123,670.36-57,779.58

Finding the Fourth Proportional to 89,556.06, 123,670.36 and 57,779.58

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Solution

The fourth proportional to 89,556.06, 123,670.36 and 57,779.58 is: 79,789.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,556.06 : 123,670.36 = 57,779.58 : x
  2. Step 2: Convert to fraction form
    89,556.06/123,670.36 = 57,779.58/x
  3. Step 3: Cross multiply
    89,556.06x = 123,670.36 × 57,779.58
  4. Step 4: Simplify right side
    89,556.06x = 7,145,621,459.25
  5. Step 5: Solve for x
    x = 7,145,621,459.25/89,556.06
  6. Step 6: Final answer
    x = 79,789.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.