Home / 85,979.88-118,556.40-55,725.48

Finding the Fourth Proportional to 85,979.88, 118,556.40 and 55,725.48

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Solution

The fourth proportional to 85,979.88, 118,556.40 and 55,725.48 is: 76,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,979.88 : 118,556.40 = 55,725.48 : x
  2. Step 2: Convert to fraction form
    85,979.88/118,556.40 = 55,725.48/x
  3. Step 3: Cross multiply
    85,979.88x = 118,556.40 × 55,725.48
  4. Step 4: Simplify right side
    85,979.88x = 6,606,612,297.07
  5. Step 5: Solve for x
    x = 6,606,612,297.07/85,979.88
  6. Step 6: Final answer
    x = 76,839.05

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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.