Home / 55,779-76,975.56-30,629.04

Finding the Fourth Proportional to 55,779, 76,975.56 and 30,629.04

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Solution

The fourth proportional to 55,779, 76,975.56 and 30,629.04 is: 42,268.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,779 : 76,975.56 = 30,629.04 : x
  2. Step 2: Convert to fraction form
    55,779/76,975.56 = 30,629.04/x
  3. Step 3: Cross multiply
    55,779x = 76,975.56 × 30,629.04
  4. Step 4: Simplify right side
    55,779x = 2,357,687,506.26
  5. Step 5: Solve for x
    x = 2,357,687,506.26/55,779
  6. Step 6: Final answer
    x = 42,268.37

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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.