Home / 81,108-111,927.87-45,298.53

Finding the Fourth Proportional to 81,108, 111,927.87 and 45,298.53

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Solution

The fourth proportional to 81,108, 111,927.87 and 45,298.53 is: 62,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,108 : 111,927.87 = 45,298.53 : x
  2. Step 2: Convert to fraction form
    81,108/111,927.87 = 45,298.53/x
  3. Step 3: Cross multiply
    81,108x = 111,927.87 × 45,298.53
  4. Step 4: Simplify right side
    81,108x = 5,070,167,977.03
  5. Step 5: Solve for x
    x = 5,070,167,977.03/81,108
  6. Step 6: Final answer
    x = 62,511.32

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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.