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Finding the Fourth Proportional to 85,393.20, 128,089.80 and 82,932.83

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Solution

The fourth proportional to 85,393.20, 128,089.80 and 82,932.83 is: 124,399.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,393.20 : 128,089.80 = 82,932.83 : x
  2. Step 2: Convert to fraction form
    85,393.20/128,089.80 = 82,932.83/x
  3. Step 3: Cross multiply
    85,393.20x = 128,089.80 × 82,932.83
  4. Step 4: Simplify right side
    85,393.20x = 10,622,848,967.69
  5. Step 5: Solve for x
    x = 10,622,848,967.69/85,393.20
  6. Step 6: Final answer
    x = 124,399.24

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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.