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Finding the Fourth Proportional to 86,446.71, 129,728.40 and 33,849.63

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Solution

The fourth proportional to 86,446.71, 129,728.40 and 33,849.63 is: 50,797.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,446.71 : 129,728.40 = 33,849.63 : x
  2. Step 2: Convert to fraction form
    86,446.71/129,728.40 = 33,849.63/x
  3. Step 3: Cross multiply
    86,446.71x = 129,728.40 × 33,849.63
  4. Step 4: Simplify right side
    86,446.71x = 4,391,258,340.49
  5. Step 5: Solve for x
    x = 4,391,258,340.49/86,446.71
  6. Step 6: Final answer
    x = 50,797.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.