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Finding the Fourth Proportional to 65,819.16, 90,830.16 and 35,604.60

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Solution

The fourth proportional to 65,819.16, 90,830.16 and 35,604.60 is: 49,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,819.16 : 90,830.16 = 35,604.60 : x
  2. Step 2: Convert to fraction form
    65,819.16/90,830.16 = 35,604.60/x
  3. Step 3: Cross multiply
    65,819.16x = 90,830.16 × 35,604.60
  4. Step 4: Simplify right side
    65,819.16x = 3,233,971,514.74
  5. Step 5: Solve for x
    x = 3,233,971,514.74/65,819.16
  6. Step 6: Final answer
    x = 49,134.20

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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.