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Finding the Fourth Proportional to 85,998.16, 128,947.57 and 33,346.13

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Solution

The fourth proportional to 85,998.16, 128,947.57 and 33,346.13 is: 49,999.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,998.16 : 128,947.57 = 33,346.13 : x
  2. Step 2: Convert to fraction form
    85,998.16/128,947.57 = 33,346.13/x
  3. Step 3: Cross multiply
    85,998.16x = 128,947.57 × 33,346.13
  4. Step 4: Simplify right side
    85,998.16x = 4,299,902,523.42
  5. Step 5: Solve for x
    x = 4,299,902,523.42/85,998.16
  6. Step 6: Final answer
    x = 49,999.94

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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.