Home / 91,840.64-126,745.74-61,161.12

Finding the Fourth Proportional to 91,840.64, 126,745.74 and 61,161.12

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Solution

The fourth proportional to 91,840.64, 126,745.74 and 61,161.12 is: 84,406.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,840.64 : 126,745.74 = 61,161.12 : x
  2. Step 2: Convert to fraction form
    91,840.64/126,745.74 = 61,161.12/x
  3. Step 3: Cross multiply
    91,840.64x = 126,745.74 × 61,161.12
  4. Step 4: Simplify right side
    91,840.64x = 7,751,911,413.63
  5. Step 5: Solve for x
    x = 7,751,911,413.63/91,840.64
  6. Step 6: Final answer
    x = 84,406.12

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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.