Home / 81,104.37-121,682.64-38,987.52

Finding the Fourth Proportional to 81,104.37, 121,682.64 and 38,987.52

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Solution

The fourth proportional to 81,104.37, 121,682.64 and 38,987.52 is: 58,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,104.37 : 121,682.64 = 38,987.52 : x
  2. Step 2: Convert to fraction form
    81,104.37/121,682.64 = 38,987.52/x
  3. Step 3: Cross multiply
    81,104.37x = 121,682.64 × 38,987.52
  4. Step 4: Simplify right side
    81,104.37x = 4,744,104,360.65
  5. Step 5: Solve for x
    x = 4,744,104,360.65/81,104.37
  6. Step 6: Final answer
    x = 58,493.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.