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Finding the Fourth Proportional to 65,623.80, 90,560.82 and 35,815.80

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Solution

The fourth proportional to 65,623.80, 90,560.82 and 35,815.80 is: 49,425.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,623.80 : 90,560.82 = 35,815.80 : x
  2. Step 2: Convert to fraction form
    65,623.80/90,560.82 = 35,815.80/x
  3. Step 3: Cross multiply
    65,623.80x = 90,560.82 × 35,815.80
  4. Step 4: Simplify right side
    65,623.80x = 3,243,508,216.96
  5. Step 5: Solve for x
    x = 3,243,508,216.96/65,623.80
  6. Step 6: Final answer
    x = 49,425.79

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1.5x scale

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.