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Finding the Fourth Proportional to 65,808.52, 90,817.92 and 36,000.52

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Solution

The fourth proportional to 65,808.52, 90,817.92 and 36,000.52 is: 49,681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,808.52 : 90,817.92 = 36,000.52 : x
  2. Step 2: Convert to fraction form
    65,808.52/90,817.92 = 36,000.52/x
  3. Step 3: Cross multiply
    65,808.52x = 90,817.92 × 36,000.52
  4. Step 4: Simplify right side
    65,808.52x = 3,269,492,345.32
  5. Step 5: Solve for x
    x = 3,269,492,345.32/65,808.52
  6. Step 6: Final answer
    x = 49,681.90

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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.