Home / 87,857.70-121,242.20-47,571.14

Finding the Fourth Proportional to 87,857.70, 121,242.20 and 47,571.14

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Solution

The fourth proportional to 87,857.70, 121,242.20 and 47,571.14 is: 65,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.70 : 121,242.20 = 47,571.14 : x
  2. Step 2: Convert to fraction form
    87,857.70/121,242.20 = 47,571.14/x
  3. Step 3: Cross multiply
    87,857.70x = 121,242.20 × 47,571.14
  4. Step 4: Simplify right side
    87,857.70x = 5,767,628,826.04
  5. Step 5: Solve for x
    x = 5,767,628,826.04/87,857.70
  6. Step 6: Final answer
    x = 65,647.39

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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.