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Finding the Fourth Proportional to 56,855.77, 85,214.48 and 40,220.60

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Solution

The fourth proportional to 56,855.77, 85,214.48 and 40,220.60 is: 60,281.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,855.77 : 85,214.48 = 40,220.60 : x
  2. Step 2: Convert to fraction form
    56,855.77/85,214.48 = 40,220.60/x
  3. Step 3: Cross multiply
    56,855.77x = 85,214.48 × 40,220.60
  4. Step 4: Simplify right side
    56,855.77x = 3,427,377,592.68
  5. Step 5: Solve for x
    x = 3,427,377,592.68/56,855.77
  6. Step 6: Final answer
    x = 60,281.96

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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.