Home / 87,999.32-121,438.31-49,766.37

Finding the Fourth Proportional to 87,999.32, 121,438.31 and 49,766.37

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Solution

The fourth proportional to 87,999.32, 121,438.31 and 49,766.37 is: 68,677.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,999.32 : 121,438.31 = 49,766.37 : x
  2. Step 2: Convert to fraction form
    87,999.32/121,438.31 = 49,766.37/x
  3. Step 3: Cross multiply
    87,999.32x = 121,438.31 × 49,766.37
  4. Step 4: Simplify right side
    87,999.32x = 6,043,543,992.05
  5. Step 5: Solve for x
    x = 6,043,543,992.05/87,999.32
  6. Step 6: Final answer
    x = 68,677.17

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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.