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Finding the Fourth Proportional to 91,257.96, 125,935.25 and 50,421.96

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Solution

The fourth proportional to 91,257.96, 125,935.25 and 50,421.96 is: 69,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,257.96 : 125,935.25 = 50,421.96 : x
  2. Step 2: Convert to fraction form
    91,257.96/125,935.25 = 50,421.96/x
  3. Step 3: Cross multiply
    91,257.96x = 125,935.25 × 50,421.96
  4. Step 4: Simplify right side
    91,257.96x = 6,349,901,885.98
  5. Step 5: Solve for x
    x = 6,349,901,885.98/91,257.96
  6. Step 6: Final answer
    x = 69,581.90

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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.