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Finding the Fourth Proportional to 47,391.96, 65,384.64 and 30,394.92

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Solution

The fourth proportional to 47,391.96, 65,384.64 and 30,394.92 is: 41,934.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,391.96 : 65,384.64 = 30,394.92 : x
  2. Step 2: Convert to fraction form
    47,391.96/65,384.64 = 30,394.92/x
  3. Step 3: Cross multiply
    47,391.96x = 65,384.64 × 30,394.92
  4. Step 4: Simplify right side
    47,391.96x = 1,987,360,902.03
  5. Step 5: Solve for x
    x = 1,987,360,902.03/47,391.96
  6. Step 6: Final answer
    x = 41,934.56

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1.5x scale

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.