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Finding the Fourth Proportional to 65,753.76, 90,740.20 and 35,539

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Solution

The fourth proportional to 65,753.76, 90,740.20 and 35,539 is: 49,043.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,753.76 : 90,740.20 = 35,539 : x
  2. Step 2: Convert to fraction form
    65,753.76/90,740.20 = 35,539/x
  3. Step 3: Cross multiply
    65,753.76x = 90,740.20 × 35,539
  4. Step 4: Simplify right side
    65,753.76x = 3,224,815,967.80
  5. Step 5: Solve for x
    x = 3,224,815,967.80/65,753.76
  6. Step 6: Final answer
    x = 49,043.83

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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.