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Finding the Fourth Proportional to 85,525.65, 128,255.64 and 29,355.27

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Solution

The fourth proportional to 85,525.65, 128,255.64 and 29,355.27 is: 44,021.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,525.65 : 128,255.64 = 29,355.27 : x
  2. Step 2: Convert to fraction form
    85,525.65/128,255.64 = 29,355.27/x
  3. Step 3: Cross multiply
    85,525.65x = 128,255.64 × 29,355.27
  4. Step 4: Simplify right side
    85,525.65x = 3,764,978,941.22
  5. Step 5: Solve for x
    x = 3,764,978,941.22/85,525.65
  6. Step 6: Final answer
    x = 44,021.63

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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.