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Finding the Fourth Proportional to 85,760.37, 128,652.99 and 26,600.80

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Solution

The fourth proportional to 85,760.37, 128,652.99 and 26,600.80 is: 39,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,760.37 : 128,652.99 = 26,600.80 : x
  2. Step 2: Convert to fraction form
    85,760.37/128,652.99 = 26,600.80/x
  3. Step 3: Cross multiply
    85,760.37x = 128,652.99 × 26,600.80
  4. Step 4: Simplify right side
    85,760.37x = 3,422,272,456.39
  5. Step 5: Solve for x
    x = 3,422,272,456.39/85,760.37
  6. Step 6: Final answer
    x = 39,905.06

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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.