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Finding the Fourth Proportional to 86,678.76, 119,638.44 and 48,974.88

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Solution

The fourth proportional to 86,678.76, 119,638.44 and 48,974.88 is: 67,597.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,678.76 : 119,638.44 = 48,974.88 : x
  2. Step 2: Convert to fraction form
    86,678.76/119,638.44 = 48,974.88/x
  3. Step 3: Cross multiply
    86,678.76x = 119,638.44 × 48,974.88
  4. Step 4: Simplify right side
    86,678.76x = 5,859,278,242.39
  5. Step 5: Solve for x
    x = 5,859,278,242.39/86,678.76
  6. Step 6: Final answer
    x = 67,597.62

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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.