Home / 87,687.94-121,008.61-47,401.35

Finding the Fourth Proportional to 87,687.94, 121,008.61 and 47,401.35

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Solution

The fourth proportional to 87,687.94, 121,008.61 and 47,401.35 is: 65,413.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687.94 : 121,008.61 = 47,401.35 : x
  2. Step 2: Convert to fraction form
    87,687.94/121,008.61 = 47,401.35/x
  3. Step 3: Cross multiply
    87,687.94x = 121,008.61 × 47,401.35
  4. Step 4: Simplify right side
    87,687.94x = 5,735,971,628.45
  5. Step 5: Solve for x
    x = 5,735,971,628.45/87,687.94
  6. Step 6: Final answer
    x = 65,413.46

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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.