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Finding the Fourth Proportional to 56,722.60, 85,083.90 and 55,847.80

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Solution

The fourth proportional to 56,722.60, 85,083.90 and 55,847.80 is: 83,771.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,722.60 : 85,083.90 = 55,847.80 : x
  2. Step 2: Convert to fraction form
    56,722.60/85,083.90 = 55,847.80/x
  3. Step 3: Cross multiply
    56,722.60x = 85,083.90 × 55,847.80
  4. Step 4: Simplify right side
    56,722.60x = 4,751,748,630.42
  5. Step 5: Solve for x
    x = 4,751,748,630.42/56,722.60
  6. Step 6: Final answer
    x = 83,771.70

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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.