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Finding the Fourth Proportional to 86,799, 119,783.34 and 47,055

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Solution

The fourth proportional to 86,799, 119,783.34 and 47,055 is: 64,936.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,799 : 119,783.34 = 47,055 : x
  2. Step 2: Convert to fraction form
    86,799/119,783.34 = 47,055/x
  3. Step 3: Cross multiply
    86,799x = 119,783.34 × 47,055
  4. Step 4: Simplify right side
    86,799x = 5,636,405,063.70
  5. Step 5: Solve for x
    x = 5,636,405,063.70/86,799
  6. Step 6: Final answer
    x = 64,936.29

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1.5x scale

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.