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Finding the Fourth Proportional to 85,585.67, 128,378.40 and 32,958.25

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Solution

The fourth proportional to 85,585.67, 128,378.40 and 32,958.25 is: 49,437.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,585.67 : 128,378.40 = 32,958.25 : x
  2. Step 2: Convert to fraction form
    85,585.67/128,378.40 = 32,958.25/x
  3. Step 3: Cross multiply
    85,585.67x = 128,378.40 × 32,958.25
  4. Step 4: Simplify right side
    85,585.67x = 4,231,127,401.80
  5. Step 5: Solve for x
    x = 4,231,127,401.80/85,585.67
  6. Step 6: Final answer
    x = 49,437.33

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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.