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Finding the Fourth Proportional to 61,340.64, 91,960.64 and 31,766.88

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Solution

The fourth proportional to 61,340.64, 91,960.64 and 31,766.88 is: 47,624.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,340.64 : 91,960.64 = 31,766.88 : x
  2. Step 2: Convert to fraction form
    61,340.64/91,960.64 = 31,766.88/x
  3. Step 3: Cross multiply
    61,340.64x = 91,960.64 × 31,766.88
  4. Step 4: Simplify right side
    61,340.64x = 2,921,302,615.60
  5. Step 5: Solve for x
    x = 2,921,302,615.60/61,340.64
  6. Step 6: Final answer
    x = 47,624.26

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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.