Home / 85,881.04-118,455.87-82,990.96

Finding the Fourth Proportional to 85,881.04, 118,455.87 and 82,990.96

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Solution

The fourth proportional to 85,881.04, 118,455.87 and 82,990.96 is: 114,469.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,881.04 : 118,455.87 = 82,990.96 : x
  2. Step 2: Convert to fraction form
    85,881.04/118,455.87 = 82,990.96/x
  3. Step 3: Cross multiply
    85,881.04x = 118,455.87 × 82,990.96
  4. Step 4: Simplify right side
    85,881.04x = 9,830,766,368.94
  5. Step 5: Solve for x
    x = 9,830,766,368.94/85,881.04
  6. Step 6: Final answer
    x = 114,469.58

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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.