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Finding the Fourth Proportional to 85,520.87, 128,304.81 and 35,624.33

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Solution

The fourth proportional to 85,520.87, 128,304.81 and 35,624.33 is: 53,446.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520.87 : 128,304.81 = 35,624.33 : x
  2. Step 2: Convert to fraction form
    85,520.87/128,304.81 = 35,624.33/x
  3. Step 3: Cross multiply
    85,520.87x = 128,304.81 × 35,624.33
  4. Step 4: Simplify right side
    85,520.87x = 4,570,772,892.03
  5. Step 5: Solve for x
    x = 4,570,772,892.03/85,520.87
  6. Step 6: Final answer
    x = 53,446.29

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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.