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Finding the Fourth Proportional to 57,277.45, 85,979.03 and 45,506.89

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Solution

The fourth proportional to 57,277.45, 85,979.03 and 45,506.89 is: 68,310.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,277.45 : 85,979.03 = 45,506.89 : x
  2. Step 2: Convert to fraction form
    57,277.45/85,979.03 = 45,506.89/x
  3. Step 3: Cross multiply
    57,277.45x = 85,979.03 × 45,506.89
  4. Step 4: Simplify right side
    57,277.45x = 3,912,637,830.62
  5. Step 5: Solve for x
    x = 3,912,637,830.62/57,277.45
  6. Step 6: Final answer
    x = 68,310.27

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1.5x scale

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.