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Finding the Fourth Proportional to 71,186.85, 98,233.64 and 39,353.85

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Solution

The fourth proportional to 71,186.85, 98,233.64 and 39,353.85 is: 54,305.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,186.85 : 98,233.64 = 39,353.85 : x
  2. Step 2: Convert to fraction form
    71,186.85/98,233.64 = 39,353.85/x
  3. Step 3: Cross multiply
    71,186.85x = 98,233.64 × 39,353.85
  4. Step 4: Simplify right side
    71,186.85x = 3,865,871,933.51
  5. Step 5: Solve for x
    x = 3,865,871,933.51/71,186.85
  6. Step 6: Final answer
    x = 54,305.98

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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.