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Finding the Fourth Proportional to 91,333.37, 125,958.36 and 57,345

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Solution

The fourth proportional to 91,333.37, 125,958.36 and 57,345 is: 79,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,333.37 : 125,958.36 = 57,345 : x
  2. Step 2: Convert to fraction form
    91,333.37/125,958.36 = 57,345/x
  3. Step 3: Cross multiply
    91,333.37x = 125,958.36 × 57,345
  4. Step 4: Simplify right side
    91,333.37x = 7,223,082,154.20
  5. Step 5: Solve for x
    x = 7,223,082,154.20/91,333.37
  6. Step 6: Final answer
    x = 79,084.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.