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Finding the Fourth Proportional to 86,489.82, 119,356.11 and 48,763.98

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Solution

The fourth proportional to 86,489.82, 119,356.11 and 48,763.98 is: 67,294.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,489.82 : 119,356.11 = 48,763.98 : x
  2. Step 2: Convert to fraction form
    86,489.82/119,356.11 = 48,763.98/x
  3. Step 3: Cross multiply
    86,489.82x = 119,356.11 × 48,763.98
  4. Step 4: Simplify right side
    86,489.82x = 5,820,278,960.92
  5. Step 5: Solve for x
    x = 5,820,278,960.92/86,489.82
  6. Step 6: Final answer
    x = 67,294.38

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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.