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Finding the Fourth Proportional to 65,865.46, 98,568.51 and 53,880.70

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Solution

The fourth proportional to 65,865.46, 98,568.51 and 53,880.70 is: 80,633.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,865.46 : 98,568.51 = 53,880.70 : x
  2. Step 2: Convert to fraction form
    65,865.46/98,568.51 = 53,880.70/x
  3. Step 3: Cross multiply
    65,865.46x = 98,568.51 × 53,880.70
  4. Step 4: Simplify right side
    65,865.46x = 5,310,940,316.76
  5. Step 5: Solve for x
    x = 5,310,940,316.76/65,865.46
  6. Step 6: Final answer
    x = 80,633.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.