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Finding the Fourth Proportional to 86,695, 119,648.84 and 48,971.68

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Solution

The fourth proportional to 86,695, 119,648.84 and 48,971.68 is: 67,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,695 : 119,648.84 = 48,971.68 : x
  2. Step 2: Convert to fraction form
    86,695/119,648.84 = 48,971.68/x
  3. Step 3: Cross multiply
    86,695x = 119,648.84 × 48,971.68
  4. Step 4: Simplify right side
    86,695x = 5,859,404,704.85
  5. Step 5: Solve for x
    x = 5,859,404,704.85/86,695
  6. Step 6: Final answer
    x = 67,586.42

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1.5x scale

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.