Home / 81,026.88-121,539.30-27,718.32

Finding the Fourth Proportional to 81,026.88, 121,539.30 and 27,718.32

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Solution

The fourth proportional to 81,026.88, 121,539.30 and 27,718.32 is: 41,577.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,026.88 : 121,539.30 = 27,718.32 : x
  2. Step 2: Convert to fraction form
    81,026.88/121,539.30 = 27,718.32/x
  3. Step 3: Cross multiply
    81,026.88x = 121,539.30 × 27,718.32
  4. Step 4: Simplify right side
    81,026.88x = 3,368,865,209.98
  5. Step 5: Solve for x
    x = 3,368,865,209.98/81,026.88
  6. Step 6: Final answer
    x = 41,577.13

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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.