Home / 87,866.60-121,255.69-47,580.36

Finding the Fourth Proportional to 87,866.60, 121,255.69 and 47,580.36

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Solution

The fourth proportional to 87,866.60, 121,255.69 and 47,580.36 is: 65,660.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,866.60 : 121,255.69 = 47,580.36 : x
  2. Step 2: Convert to fraction form
    87,866.60/121,255.69 = 47,580.36/x
  3. Step 3: Cross multiply
    87,866.60x = 121,255.69 × 47,580.36
  4. Step 4: Simplify right side
    87,866.60x = 5,769,389,263.30
  5. Step 5: Solve for x
    x = 5,769,389,263.30/87,866.60
  6. Step 6: Final answer
    x = 65,660.78

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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.