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Finding the Fourth Proportional to 95,652.36, 131,699.79 and 81,281.88

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Solution

The fourth proportional to 95,652.36, 131,699.79 and 81,281.88 is: 111,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,652.36 : 131,699.79 = 81,281.88 : x
  2. Step 2: Convert to fraction form
    95,652.36/131,699.79 = 81,281.88/x
  3. Step 3: Cross multiply
    95,652.36x = 131,699.79 × 81,281.88
  4. Step 4: Simplify right side
    95,652.36x = 10,704,806,526.81
  5. Step 5: Solve for x
    x = 10,704,806,526.81/95,652.36
  6. Step 6: Final answer
    x = 111,913.67

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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.