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Finding the Fourth Proportional to 86,364.40, 119,178.52 and 48,640.88

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Solution

The fourth proportional to 86,364.40, 119,178.52 and 48,640.88 is: 67,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,364.40 : 119,178.52 = 48,640.88 : x
  2. Step 2: Convert to fraction form
    86,364.40/119,178.52 = 48,640.88/x
  3. Step 3: Cross multiply
    86,364.40x = 119,178.52 × 48,640.88
  4. Step 4: Simplify right side
    86,364.40x = 5,796,948,089.90
  5. Step 5: Solve for x
    x = 5,796,948,089.90/86,364.40
  6. Step 6: Final answer
    x = 67,121.96

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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.