Home / 87,982.86-121,413.40-52,151.60

Finding the Fourth Proportional to 87,982.86, 121,413.40 and 52,151.60

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Solution

The fourth proportional to 87,982.86, 121,413.40 and 52,151.60 is: 71,967.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,982.86 : 121,413.40 = 52,151.60 : x
  2. Step 2: Convert to fraction form
    87,982.86/121,413.40 = 52,151.60/x
  3. Step 3: Cross multiply
    87,982.86x = 121,413.40 × 52,151.60
  4. Step 4: Simplify right side
    87,982.86x = 6,331,903,071.44
  5. Step 5: Solve for x
    x = 6,331,903,071.44/87,982.86
  6. Step 6: Final answer
    x = 71,967.46

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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.