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Finding the Fourth Proportional to 31,091.55, 46,644.48 and 8,905.11

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Solution

The fourth proportional to 31,091.55, 46,644.48 and 8,905.11 is: 13,359.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,091.55 : 46,644.48 = 8,905.11 : x
  2. Step 2: Convert to fraction form
    31,091.55/46,644.48 = 8,905.11/x
  3. Step 3: Cross multiply
    31,091.55x = 46,644.48 × 8,905.11
  4. Step 4: Simplify right side
    31,091.55x = 415,374,225.29
  5. Step 5: Solve for x
    x = 415,374,225.29/31,091.55
  6. Step 6: Final answer
    x = 13,359.71

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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.