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Finding the Fourth Proportional to 85,864.80, 128,845.92 and 33,277.92

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Solution

The fourth proportional to 85,864.80, 128,845.92 and 33,277.92 is: 49,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,864.80 : 128,845.92 = 33,277.92 : x
  2. Step 2: Convert to fraction form
    85,864.80/128,845.92 = 33,277.92/x
  3. Step 3: Cross multiply
    85,864.80x = 128,845.92 × 33,277.92
  4. Step 4: Simplify right side
    85,864.80x = 4,287,724,218.09
  5. Step 5: Solve for x
    x = 4,287,724,218.09/85,864.80
  6. Step 6: Final answer
    x = 49,935.76

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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.