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Finding the Fourth Proportional to 85,589.56, 128,374.62 and 23,245.48

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Solution

The fourth proportional to 85,589.56, 128,374.62 and 23,245.48 is: 34,865.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,589.56 : 128,374.62 = 23,245.48 : x
  2. Step 2: Convert to fraction form
    85,589.56/128,374.62 = 23,245.48/x
  3. Step 3: Cross multiply
    85,589.56x = 128,374.62 × 23,245.48
  4. Step 4: Simplify right side
    85,589.56x = 2,984,129,661.72
  5. Step 5: Solve for x
    x = 2,984,129,661.72/85,589.56
  6. Step 6: Final answer
    x = 34,865.58

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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.