Home / 81,675.36-112,724.10-49,862.70

Finding the Fourth Proportional to 81,675.36, 112,724.10 and 49,862.70

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Solution

The fourth proportional to 81,675.36, 112,724.10 and 49,862.70 is: 68,817.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,675.36 : 112,724.10 = 49,862.70 : x
  2. Step 2: Convert to fraction form
    81,675.36/112,724.10 = 49,862.70/x
  3. Step 3: Cross multiply
    81,675.36x = 112,724.10 × 49,862.70
  4. Step 4: Simplify right side
    81,675.36x = 5,620,727,981.07
  5. Step 5: Solve for x
    x = 5,620,727,981.07/81,675.36
  6. Step 6: Final answer
    x = 68,817.91

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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.