Home / 87,809.88-121,178-49,569.80

Finding the Fourth Proportional to 87,809.88, 121,178 and 49,569.80

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Solution

The fourth proportional to 87,809.88, 121,178 and 49,569.80 is: 68,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,809.88 : 121,178 = 49,569.80 : x
  2. Step 2: Convert to fraction form
    87,809.88/121,178 = 49,569.80/x
  3. Step 3: Cross multiply
    87,809.88x = 121,178 × 49,569.80
  4. Step 4: Simplify right side
    87,809.88x = 6,006,769,224.40
  5. Step 5: Solve for x
    x = 6,006,769,224.40/87,809.88
  6. Step 6: Final answer
    x = 68,406.53

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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.