Home / 87,868.58-121,258.04-47,581.79

Finding the Fourth Proportional to 87,868.58, 121,258.04 and 47,581.79

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Solution

The fourth proportional to 87,868.58, 121,258.04 and 47,581.79 is: 65,662.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,868.58 : 121,258.04 = 47,581.79 : x
  2. Step 2: Convert to fraction form
    87,868.58/121,258.04 = 47,581.79/x
  3. Step 3: Cross multiply
    87,868.58x = 121,258.04 × 47,581.79
  4. Step 4: Simplify right side
    87,868.58x = 5,769,673,750.89
  5. Step 5: Solve for x
    x = 5,769,673,750.89/87,868.58
  6. Step 6: Final answer
    x = 65,662.54

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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.