Home / 85,156.80-117,511.20-49,340.58

Finding the Fourth Proportional to 85,156.80, 117,511.20 and 49,340.58

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Solution

The fourth proportional to 85,156.80, 117,511.20 and 49,340.58 is: 68,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,156.80 : 117,511.20 = 49,340.58 : x
  2. Step 2: Convert to fraction form
    85,156.80/117,511.20 = 49,340.58/x
  3. Step 3: Cross multiply
    85,156.80x = 117,511.20 × 49,340.58
  4. Step 4: Simplify right side
    85,156.80x = 5,798,070,764.50
  5. Step 5: Solve for x
    x = 5,798,070,764.50/85,156.80
  6. Step 6: Final answer
    x = 68,087.00

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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.