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Finding the Fourth Proportional to 85,489.83, 128,223.81 and 35,560.62

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Solution

The fourth proportional to 85,489.83, 128,223.81 and 35,560.62 is: 53,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,489.83 : 128,223.81 = 35,560.62 : x
  2. Step 2: Convert to fraction form
    85,489.83/128,223.81 = 35,560.62/x
  3. Step 3: Cross multiply
    85,489.83x = 128,223.81 × 35,560.62
  4. Step 4: Simplify right side
    85,489.83x = 4,559,718,182.36
  5. Step 5: Solve for x
    x = 4,559,718,182.36/85,489.83
  6. Step 6: Final answer
    x = 53,336.38

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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.