Home / 86,103.88-118,779.36-55,906.24

Finding the Fourth Proportional to 86,103.88, 118,779.36 and 55,906.24

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Solution

The fourth proportional to 86,103.88, 118,779.36 and 55,906.24 is: 77,122.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,103.88 : 118,779.36 = 55,906.24 : x
  2. Step 2: Convert to fraction form
    86,103.88/118,779.36 = 55,906.24/x
  3. Step 3: Cross multiply
    86,103.88x = 118,779.36 × 55,906.24
  4. Step 4: Simplify right side
    86,103.88x = 6,640,507,407.21
  5. Step 5: Solve for x
    x = 6,640,507,407.21/86,103.88
  6. Step 6: Final answer
    x = 77,122.05

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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.