Home / 81,216.90-112,113.87-49,396.02

Finding the Fourth Proportional to 81,216.90, 112,113.87 and 49,396.02

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Solution

The fourth proportional to 81,216.90, 112,113.87 and 49,396.02 is: 68,187.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,216.90 : 112,113.87 = 49,396.02 : x
  2. Step 2: Convert to fraction form
    81,216.90/112,113.87 = 49,396.02/x
  3. Step 3: Cross multiply
    81,216.90x = 112,113.87 × 49,396.02
  4. Step 4: Simplify right side
    81,216.90x = 5,537,978,964.80
  5. Step 5: Solve for x
    x = 5,537,978,964.80/81,216.90
  6. Step 6: Final answer
    x = 68,187.52

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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.