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Finding the Fourth Proportional to 85,546.97, 128,234.34 and 35,654.68

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Solution

The fourth proportional to 85,546.97, 128,234.34 and 35,654.68 is: 53,446.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,546.97 : 128,234.34 = 35,654.68 : x
  2. Step 2: Convert to fraction form
    85,546.97/128,234.34 = 35,654.68/x
  3. Step 3: Cross multiply
    85,546.97x = 128,234.34 × 35,654.68
  4. Step 4: Simplify right side
    85,546.97x = 4,572,154,518.00
  5. Step 5: Solve for x
    x = 4,572,154,518.00/85,546.97
  6. Step 6: Final answer
    x = 53,446.13

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1.5x scale

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.