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Finding the Fourth Proportional to 91,190.73, 125,821.04 and 53,457.69

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Solution

The fourth proportional to 91,190.73, 125,821.04 and 53,457.69 is: 73,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,190.73 : 125,821.04 = 53,457.69 : x
  2. Step 2: Convert to fraction form
    91,190.73/125,821.04 = 53,457.69/x
  3. Step 3: Cross multiply
    91,190.73x = 125,821.04 × 53,457.69
  4. Step 4: Simplify right side
    91,190.73x = 6,726,101,613.15
  5. Step 5: Solve for x
    x = 6,726,101,613.15/91,190.73
  6. Step 6: Final answer
    x = 73,758.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.