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Finding the Fourth Proportional to 85,502.94, 128,221.56 and 35,606.58

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Solution

The fourth proportional to 85,502.94, 128,221.56 and 35,606.58 is: 53,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,502.94 : 128,221.56 = 35,606.58 : x
  2. Step 2: Convert to fraction form
    85,502.94/128,221.56 = 35,606.58/x
  3. Step 3: Cross multiply
    85,502.94x = 128,221.56 × 35,606.58
  4. Step 4: Simplify right side
    85,502.94x = 4,565,531,233.86
  5. Step 5: Solve for x
    x = 4,565,531,233.86/85,502.94
  6. Step 6: Final answer
    x = 53,396.19

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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.