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Finding the Fourth Proportional to 86,391.63, 119,220.26 and 48,665.61

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Solution

The fourth proportional to 86,391.63, 119,220.26 and 48,665.61 is: 67,158.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,391.63 : 119,220.26 = 48,665.61 : x
  2. Step 2: Convert to fraction form
    86,391.63/119,220.26 = 48,665.61/x
  3. Step 3: Cross multiply
    86,391.63x = 119,220.26 × 48,665.61
  4. Step 4: Simplify right side
    86,391.63x = 5,801,926,433.93
  5. Step 5: Solve for x
    x = 5,801,926,433.93/86,391.63
  6. Step 6: Final answer
    x = 67,158.43

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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.