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Finding the Fourth Proportional to 65,081.46, 89,813.57 and 36,787.15

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Solution

The fourth proportional to 65,081.46, 89,813.57 and 36,787.15 is: 50,766.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,081.46 : 89,813.57 = 36,787.15 : x
  2. Step 2: Convert to fraction form
    65,081.46/89,813.57 = 36,787.15/x
  3. Step 3: Cross multiply
    65,081.46x = 89,813.57 × 36,787.15
  4. Step 4: Simplify right side
    65,081.46x = 3,303,985,271.63
  5. Step 5: Solve for x
    x = 3,303,985,271.63/65,081.46
  6. Step 6: Final answer
    x = 50,766.92

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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.