Home / 81,238.07-121,822.25-27,935.42

Finding the Fourth Proportional to 81,238.07, 121,822.25 and 27,935.42

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Solution

The fourth proportional to 81,238.07, 121,822.25 and 27,935.42 is: 41,891.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,238.07 : 121,822.25 = 27,935.42 : x
  2. Step 2: Convert to fraction form
    81,238.07/121,822.25 = 27,935.42/x
  3. Step 3: Cross multiply
    81,238.07x = 121,822.25 × 27,935.42
  4. Step 4: Simplify right side
    81,238.07x = 3,403,154,970.31
  5. Step 5: Solve for x
    x = 3,403,154,970.31/81,238.07
  6. Step 6: Final answer
    x = 41,891.14

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1.5x scale

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.