Home / 85,131.78-117,377.76-53,245.32

Finding the Fourth Proportional to 85,131.78, 117,377.76 and 53,245.32

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Solution

The fourth proportional to 85,131.78, 117,377.76 and 53,245.32 is: 73,413.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,131.78 : 117,377.76 = 53,245.32 : x
  2. Step 2: Convert to fraction form
    85,131.78/117,377.76 = 53,245.32/x
  3. Step 3: Cross multiply
    85,131.78x = 117,377.76 × 53,245.32
  4. Step 4: Simplify right side
    85,131.78x = 6,249,816,392.08
  5. Step 5: Solve for x
    x = 6,249,816,392.08/85,131.78
  6. Step 6: Final answer
    x = 73,413.43

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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.