Home / 87,857.53-121,243.20-47,571.34

Finding the Fourth Proportional to 87,857.53, 121,243.20 and 47,571.34

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Solution

The fourth proportional to 87,857.53, 121,243.20 and 47,571.34 is: 65,648.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.53 : 121,243.20 = 47,571.34 : x
  2. Step 2: Convert to fraction form
    87,857.53/121,243.20 = 47,571.34/x
  3. Step 3: Cross multiply
    87,857.53x = 121,243.20 × 47,571.34
  4. Step 4: Simplify right side
    87,857.53x = 5,767,701,489.89
  5. Step 5: Solve for x
    x = 5,767,701,489.89/87,857.53
  6. Step 6: Final answer
    x = 65,648.35

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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.