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Finding the Fourth Proportional to 65,274.25, 90,078.56 and 36,981.85

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Solution

The fourth proportional to 65,274.25, 90,078.56 and 36,981.85 is: 51,035.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,274.25 : 90,078.56 = 36,981.85 : x
  2. Step 2: Convert to fraction form
    65,274.25/90,078.56 = 36,981.85/x
  3. Step 3: Cross multiply
    65,274.25x = 90,078.56 × 36,981.85
  4. Step 4: Simplify right side
    65,274.25x = 3,331,271,794.14
  5. Step 5: Solve for x
    x = 3,331,271,794.14/65,274.25
  6. Step 6: Final answer
    x = 51,035.01

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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.