Home / 87,795.48-121,176.78-55,509.60

Finding the Fourth Proportional to 87,795.48, 121,176.78 and 55,509.60

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Solution

The fourth proportional to 87,795.48, 121,176.78 and 55,509.60 is: 76,615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,795.48 : 121,176.78 = 55,509.60 : x
  2. Step 2: Convert to fraction form
    87,795.48/121,176.78 = 55,509.60/x
  3. Step 3: Cross multiply
    87,795.48x = 121,176.78 × 55,509.60
  4. Step 4: Simplify right side
    87,795.48x = 6,726,474,587.09
  5. Step 5: Solve for x
    x = 6,726,474,587.09/87,795.48
  6. Step 6: Final answer
    x = 76,615.27

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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.