Home / 91,413.74-126,151.25-51,128.19

Finding the Fourth Proportional to 91,413.74, 126,151.25 and 51,128.19

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Solution

The fourth proportional to 91,413.74, 126,151.25 and 51,128.19 is: 70,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,413.74 : 126,151.25 = 51,128.19 : x
  2. Step 2: Convert to fraction form
    91,413.74/126,151.25 = 51,128.19/x
  3. Step 3: Cross multiply
    91,413.74x = 126,151.25 × 51,128.19
  4. Step 4: Simplify right side
    91,413.74x = 6,449,885,078.74
  5. Step 5: Solve for x
    x = 6,449,885,078.74/91,413.74
  6. Step 6: Final answer
    x = 70,557.06

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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.