Home / 81,093.12-111,895.74-45,281.40

Finding the Fourth Proportional to 81,093.12, 111,895.74 and 45,281.40

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Solution

The fourth proportional to 81,093.12, 111,895.74 and 45,281.40 is: 62,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,093.12 : 111,895.74 = 45,281.40 : x
  2. Step 2: Convert to fraction form
    81,093.12/111,895.74 = 45,281.40/x
  3. Step 3: Cross multiply
    81,093.12x = 111,895.74 × 45,281.40
  4. Step 4: Simplify right side
    81,093.12x = 5,066,795,761.24
  5. Step 5: Solve for x
    x = 5,066,795,761.24/81,093.12
  6. Step 6: Final answer
    x = 62,481.20

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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.