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Finding the Fourth Proportional to 86,894.34, 119,852.28 and 79,747.32

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Solution

The fourth proportional to 86,894.34, 119,852.28 and 79,747.32 is: 109,994.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,894.34 : 119,852.28 = 79,747.32 : x
  2. Step 2: Convert to fraction form
    86,894.34/119,852.28 = 79,747.32/x
  3. Step 3: Cross multiply
    86,894.34x = 119,852.28 × 79,747.32
  4. Step 4: Simplify right side
    86,894.34x = 9,557,898,125.89
  5. Step 5: Solve for x
    x = 9,557,898,125.89/86,894.34
  6. Step 6: Final answer
    x = 109,994.48

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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.