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Finding the Fourth Proportional to 85,954.79, 128,958.58 and 41,033.47

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Solution

The fourth proportional to 85,954.79, 128,958.58 and 41,033.47 is: 61,562.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954.79 : 128,958.58 = 41,033.47 : x
  2. Step 2: Convert to fraction form
    85,954.79/128,958.58 = 41,033.47/x
  3. Step 3: Cross multiply
    85,954.79x = 128,958.58 × 41,033.47
  4. Step 4: Simplify right side
    85,954.79x = 5,291,618,023.67
  5. Step 5: Solve for x
    x = 5,291,618,023.67/85,954.79
  6. Step 6: Final answer
    x = 61,562.81

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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.