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Finding the Fourth Proportional to 86,894.80, 119,852.98 and 79,747.80

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Solution

The fourth proportional to 86,894.80, 119,852.98 and 79,747.80 is: 109,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,894.80 : 119,852.98 = 79,747.80 : x
  2. Step 2: Convert to fraction form
    86,894.80/119,852.98 = 79,747.80/x
  3. Step 3: Cross multiply
    86,894.80x = 119,852.98 × 79,747.80
  4. Step 4: Simplify right side
    86,894.80x = 9,558,011,278.21
  5. Step 5: Solve for x
    x = 9,558,011,278.21/86,894.80
  6. Step 6: Final answer
    x = 109,995.21

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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.