Home / 74,378.69-111,449.10-66,825.35

Finding the Fourth Proportional to 74,378.69, 111,449.10 and 66,825.35

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Solution

The fourth proportional to 74,378.69, 111,449.10 and 66,825.35 is: 100,131.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,378.69 : 111,449.10 = 66,825.35 : x
  2. Step 2: Convert to fraction form
    74,378.69/111,449.10 = 66,825.35/x
  3. Step 3: Cross multiply
    74,378.69x = 111,449.10 × 66,825.35
  4. Step 4: Simplify right side
    74,378.69x = 7,447,625,114.69
  5. Step 5: Solve for x
    x = 7,447,625,114.69/74,378.69
  6. Step 6: Final answer
    x = 100,131.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.