Home / 87,865.77-121,255.34-47,579.54

Finding the Fourth Proportional to 87,865.77, 121,255.34 and 47,579.54

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Solution

The fourth proportional to 87,865.77, 121,255.34 and 47,579.54 is: 65,660.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.77 : 121,255.34 = 47,579.54 : x
  2. Step 2: Convert to fraction form
    87,865.77/121,255.34 = 47,579.54/x
  3. Step 3: Cross multiply
    87,865.77x = 121,255.34 × 47,579.54
  4. Step 4: Simplify right side
    87,865.77x = 5,769,272,455.57
  5. Step 5: Solve for x
    x = 5,769,272,455.57/87,865.77
  6. Step 6: Final answer
    x = 65,660.07

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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.