Home / 66,023.36-91,109.77-39,149.79

Finding the Fourth Proportional to 66,023.36, 91,109.77 and 39,149.79

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Solution

The fourth proportional to 66,023.36, 91,109.77 and 39,149.79 is: 54,025.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,023.36 : 91,109.77 = 39,149.79 : x
  2. Step 2: Convert to fraction form
    66,023.36/91,109.77 = 39,149.79/x
  3. Step 3: Cross multiply
    66,023.36x = 91,109.77 × 39,149.79
  4. Step 4: Simplify right side
    66,023.36x = 3,566,928,362.45
  5. Step 5: Solve for x
    x = 3,566,928,362.45/66,023.36
  6. Step 6: Final answer
    x = 54,025.25

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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.