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Finding the Fourth Proportional to 86,798.84, 119,781.32 and 50,992.11

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Solution

The fourth proportional to 86,798.84, 119,781.32 and 50,992.11 is: 70,368.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,798.84 : 119,781.32 = 50,992.11 : x
  2. Step 2: Convert to fraction form
    86,798.84/119,781.32 = 50,992.11/x
  3. Step 3: Cross multiply
    86,798.84x = 119,781.32 × 50,992.11
  4. Step 4: Simplify right side
    86,798.84x = 6,107,901,990.42
  5. Step 5: Solve for x
    x = 6,107,901,990.42/86,798.84
  6. Step 6: Final answer
    x = 70,368.48

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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.