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Finding the Fourth Proportional to 61,811.52, 85,300.80 and 36,311.52

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Solution

The fourth proportional to 61,811.52, 85,300.80 and 36,311.52 is: 50,110.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,811.52 : 85,300.80 = 36,311.52 : x
  2. Step 2: Convert to fraction form
    61,811.52/85,300.80 = 36,311.52/x
  3. Step 3: Cross multiply
    61,811.52x = 85,300.80 × 36,311.52
  4. Step 4: Simplify right side
    61,811.52x = 3,097,401,705.22
  5. Step 5: Solve for x
    x = 3,097,401,705.22/61,811.52
  6. Step 6: Final answer
    x = 50,110.43

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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.