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Finding the Fourth Proportional to 85,548.94, 128,313.39 and 32,921.62

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Solution

The fourth proportional to 85,548.94, 128,313.39 and 32,921.62 is: 49,378.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,548.94 : 128,313.39 = 32,921.62 : x
  2. Step 2: Convert to fraction form
    85,548.94/128,313.39 = 32,921.62/x
  3. Step 3: Cross multiply
    85,548.94x = 128,313.39 × 32,921.62
  4. Step 4: Simplify right side
    85,548.94x = 4,224,284,666.49
  5. Step 5: Solve for x
    x = 4,224,284,666.49/85,548.94
  6. Step 6: Final answer
    x = 49,378.57

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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.