Home / 81,683.04-112,734.80-49,870.44

Finding the Fourth Proportional to 81,683.04, 112,734.80 and 49,870.44

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Solution

The fourth proportional to 81,683.04, 112,734.80 and 49,870.44 is: 68,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,683.04 : 112,734.80 = 49,870.44 : x
  2. Step 2: Convert to fraction form
    81,683.04/112,734.80 = 49,870.44/x
  3. Step 3: Cross multiply
    81,683.04x = 112,734.80 × 49,870.44
  4. Step 4: Simplify right side
    81,683.04x = 5,622,134,079.31
  5. Step 5: Solve for x
    x = 5,622,134,079.31/81,683.04
  6. Step 6: Final answer
    x = 68,828.66

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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.