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Finding the Fourth Proportional to 85,627.81, 128,409.85 and 29,452.15

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Solution

The fourth proportional to 85,627.81, 128,409.85 and 29,452.15 is: 44,167.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,627.81 : 128,409.85 = 29,452.15 : x
  2. Step 2: Convert to fraction form
    85,627.81/128,409.85 = 29,452.15/x
  3. Step 3: Cross multiply
    85,627.81x = 128,409.85 × 29,452.15
  4. Step 4: Simplify right side
    85,627.81x = 3,781,946,163.68
  5. Step 5: Solve for x
    x = 3,781,946,163.68/85,627.81
  6. Step 6: Final answer
    x = 44,167.26

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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.