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Finding the Fourth Proportional to 68,715.62, 94,785.63 and 45,431.97

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Solution

The fourth proportional to 68,715.62, 94,785.63 and 45,431.97 is: 62,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,715.62 : 94,785.63 = 45,431.97 : x
  2. Step 2: Convert to fraction form
    68,715.62/94,785.63 = 45,431.97/x
  3. Step 3: Cross multiply
    68,715.62x = 94,785.63 × 45,431.97
  4. Step 4: Simplify right side
    68,715.62x = 4,306,297,898.59
  5. Step 5: Solve for x
    x = 4,306,297,898.59/68,715.62
  6. Step 6: Final answer
    x = 62,668.40

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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.