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Finding the Fourth Proportional to 85,553.75, 128,244.47 and 35,661.47

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Solution

The fourth proportional to 85,553.75, 128,244.47 and 35,661.47 is: 53,456.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,553.75 : 128,244.47 = 35,661.47 : x
  2. Step 2: Convert to fraction form
    85,553.75/128,244.47 = 35,661.47/x
  3. Step 3: Cross multiply
    85,553.75x = 128,244.47 × 35,661.47
  4. Step 4: Simplify right side
    85,553.75x = 4,573,385,500.04
  5. Step 5: Solve for x
    x = 4,573,385,500.04/85,553.75
  6. Step 6: Final answer
    x = 53,456.28

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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.