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Finding the Fourth Proportional to 65,489.34, 90,377.46 and 36,813.99

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Solution

The fourth proportional to 65,489.34, 90,377.46 and 36,813.99 is: 50,804.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,489.34 : 90,377.46 = 36,813.99 : x
  2. Step 2: Convert to fraction form
    65,489.34/90,377.46 = 36,813.99/x
  3. Step 3: Cross multiply
    65,489.34x = 90,377.46 × 36,813.99
  4. Step 4: Simplify right side
    65,489.34x = 3,327,154,908.67
  5. Step 5: Solve for x
    x = 3,327,154,908.67/65,489.34
  6. Step 6: Final answer
    x = 50,804.53

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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.