Home / 75,286.07-103,634.04-65,072.45

Finding the Fourth Proportional to 75,286.07, 103,634.04 and 65,072.45

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Solution

The fourth proportional to 75,286.07, 103,634.04 and 65,072.45 is: 89,574.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,286.07 : 103,634.04 = 65,072.45 : x
  2. Step 2: Convert to fraction form
    75,286.07/103,634.04 = 65,072.45/x
  3. Step 3: Cross multiply
    75,286.07x = 103,634.04 × 65,072.45
  4. Step 4: Simplify right side
    75,286.07x = 6,743,720,886.20
  5. Step 5: Solve for x
    x = 6,743,720,886.20/75,286.07
  6. Step 6: Final answer
    x = 89,574.62

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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.