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Finding the Fourth Proportional to 85,860.38, 118,384.35 and 55,634.67

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Solution

The fourth proportional to 85,860.38, 118,384.35 and 55,634.67 is: 76,709.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,860.38 : 118,384.35 = 55,634.67 : x
  2. Step 2: Convert to fraction form
    85,860.38/118,384.35 = 55,634.67/x
  3. Step 3: Cross multiply
    85,860.38x = 118,384.35 × 55,634.67
  4. Step 4: Simplify right side
    85,860.38x = 6,586,274,245.41
  5. Step 5: Solve for x
    x = 6,586,274,245.41/85,860.38
  6. Step 6: Final answer
    x = 76,709.12

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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.