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Finding the Fourth Proportional to 85,775.23, 128,631.25 and 29,601.01

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Solution

The fourth proportional to 85,775.23, 128,631.25 and 29,601.01 is: 44,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,775.23 : 128,631.25 = 29,601.01 : x
  2. Step 2: Convert to fraction form
    85,775.23/128,631.25 = 29,601.01/x
  3. Step 3: Cross multiply
    85,775.23x = 128,631.25 × 29,601.01
  4. Step 4: Simplify right side
    85,775.23x = 3,807,614,917.56
  5. Step 5: Solve for x
    x = 3,807,614,917.56/85,775.23
  6. Step 6: Final answer
    x = 44,390.61

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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.