Home / 87,689.93-121,014.83-49,961.75

Finding the Fourth Proportional to 87,689.93, 121,014.83 and 49,961.75

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Solution

The fourth proportional to 87,689.93, 121,014.83 and 49,961.75 is: 68,948.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,689.93 : 121,014.83 = 49,961.75 : x
  2. Step 2: Convert to fraction form
    87,689.93/121,014.83 = 49,961.75/x
  3. Step 3: Cross multiply
    87,689.93x = 121,014.83 × 49,961.75
  4. Step 4: Simplify right side
    87,689.93x = 6,046,112,432.94
  5. Step 5: Solve for x
    x = 6,046,112,432.94/87,689.93
  6. Step 6: Final answer
    x = 68,948.77

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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.