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Finding the Fourth Proportional to 85,635.58, 128,365.08 and 35,744.71

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Solution

The fourth proportional to 85,635.58, 128,365.08 and 35,744.71 is: 53,580.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,635.58 : 128,365.08 = 35,744.71 : x
  2. Step 2: Convert to fraction form
    85,635.58/128,365.08 = 35,744.71/x
  3. Step 3: Cross multiply
    85,635.58x = 128,365.08 × 35,744.71
  4. Step 4: Simplify right side
    85,635.58x = 4,588,372,558.73
  5. Step 5: Solve for x
    x = 4,588,372,558.73/85,635.58
  6. Step 6: Final answer
    x = 53,580.21

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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.