Home / 65,634.72-90,556.32-38,779.68

Finding the Fourth Proportional to 65,634.72, 90,556.32 and 38,779.68

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Solution

The fourth proportional to 65,634.72, 90,556.32 and 38,779.68 is: 53,504.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,634.72 : 90,556.32 = 38,779.68 : x
  2. Step 2: Convert to fraction form
    65,634.72/90,556.32 = 38,779.68/x
  3. Step 3: Cross multiply
    65,634.72x = 90,556.32 × 38,779.68
  4. Step 4: Simplify right side
    65,634.72x = 3,511,745,111.58
  5. Step 5: Solve for x
    x = 3,511,745,111.58/65,634.72
  6. Step 6: Final answer
    x = 53,504.38

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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.