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Finding the Fourth Proportional to 56,787.80, 85,181.70 and 39,073.10

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Solution

The fourth proportional to 56,787.80, 85,181.70 and 39,073.10 is: 58,609.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,787.80 : 85,181.70 = 39,073.10 : x
  2. Step 2: Convert to fraction form
    56,787.80/85,181.70 = 39,073.10/x
  3. Step 3: Cross multiply
    56,787.80x = 85,181.70 × 39,073.10
  4. Step 4: Simplify right side
    56,787.80x = 3,328,313,082.27
  5. Step 5: Solve for x
    x = 3,328,313,082.27/56,787.80
  6. Step 6: Final answer
    x = 58,609.65

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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.