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Finding the Fourth Proportional to 86,381.70, 119,166 and 50,549.54

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Solution

The fourth proportional to 86,381.70, 119,166 and 50,549.54 is: 69,734.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,381.70 : 119,166 = 50,549.54 : x
  2. Step 2: Convert to fraction form
    86,381.70/119,166 = 50,549.54/x
  3. Step 3: Cross multiply
    86,381.70x = 119,166 × 50,549.54
  4. Step 4: Simplify right side
    86,381.70x = 6,023,785,887.81
  5. Step 5: Solve for x
    x = 6,023,785,887.81/86,381.70
  6. Step 6: Final answer
    x = 69,734.51

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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.