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Finding the Fourth Proportional to 65,894.07, 90,933.66 and 35,679.40

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Solution

The fourth proportional to 65,894.07, 90,933.66 and 35,679.40 is: 49,237.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,894.07 : 90,933.66 = 35,679.40 : x
  2. Step 2: Convert to fraction form
    65,894.07/90,933.66 = 35,679.40/x
  3. Step 3: Cross multiply
    65,894.07x = 90,933.66 × 35,679.40
  4. Step 4: Simplify right side
    65,894.07x = 3,244,458,428.60
  5. Step 5: Solve for x
    x = 3,244,458,428.60/65,894.07
  6. Step 6: Final answer
    x = 49,237.49

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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.