Home / 81,083.37-121,617.63-57,492.12

Finding the Fourth Proportional to 81,083.37, 121,617.63 and 57,492.12

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Solution

The fourth proportional to 81,083.37, 121,617.63 and 57,492.12 is: 86,232.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,083.37 : 121,617.63 = 57,492.12 : x
  2. Step 2: Convert to fraction form
    81,083.37/121,617.63 = 57,492.12/x
  3. Step 3: Cross multiply
    81,083.37x = 121,617.63 × 57,492.12
  4. Step 4: Simplify right side
    81,083.37x = 6,992,055,378.08
  5. Step 5: Solve for x
    x = 6,992,055,378.08/81,083.37
  6. Step 6: Final answer
    x = 86,232.92

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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.