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Finding the Fourth Proportional to 65,893.57, 90,932.98 and 35,678.90

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Solution

The fourth proportional to 65,893.57, 90,932.98 and 35,678.90 is: 49,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,893.57 : 90,932.98 = 35,678.90 : x
  2. Step 2: Convert to fraction form
    65,893.57/90,932.98 = 35,678.90/x
  3. Step 3: Cross multiply
    65,893.57x = 90,932.98 × 35,678.90
  4. Step 4: Simplify right side
    65,893.57x = 3,244,388,700.12
  5. Step 5: Solve for x
    x = 3,244,388,700.12/65,893.57
  6. Step 6: Final answer
    x = 49,236.80

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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.