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Finding the Fourth Proportional to 85,883.32, 128,833.81 and 29,723.33

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Solution

The fourth proportional to 85,883.32, 128,833.81 and 29,723.33 is: 44,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,883.32 : 128,833.81 = 29,723.33 : x
  2. Step 2: Convert to fraction form
    85,883.32/128,833.81 = 29,723.33/x
  3. Step 3: Cross multiply
    85,883.32x = 128,833.81 × 29,723.33
  4. Step 4: Simplify right side
    85,883.32x = 3,829,369,205.62
  5. Step 5: Solve for x
    x = 3,829,369,205.62/85,883.32
  6. Step 6: Final answer
    x = 44,588.05

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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.