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Finding the Fourth Proportional to 86,549.45, 129,878.84 and 33,957.77

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Solution

The fourth proportional to 86,549.45, 129,878.84 and 33,957.77 is: 50,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,549.45 : 129,878.84 = 33,957.77 : x
  2. Step 2: Convert to fraction form
    86,549.45/129,878.84 = 33,957.77/x
  3. Step 3: Cross multiply
    86,549.45x = 129,878.84 × 33,957.77
  4. Step 4: Simplify right side
    86,549.45x = 4,410,395,212.09
  5. Step 5: Solve for x
    x = 4,410,395,212.09/86,549.45
  6. Step 6: Final answer
    x = 50,958.10

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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.