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Finding the Fourth Proportional to 31,391, 43,224.80 and 27,134.44

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Solution

The fourth proportional to 31,391, 43,224.80 and 27,134.44 is: 37,363.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391 : 43,224.80 = 27,134.44 : x
  2. Step 2: Convert to fraction form
    31,391/43,224.80 = 27,134.44/x
  3. Step 3: Cross multiply
    31,391x = 43,224.80 × 27,134.44
  4. Step 4: Simplify right side
    31,391x = 1,172,880,742.11
  5. Step 5: Solve for x
    x = 1,172,880,742.11/31,391
  6. Step 6: Final answer
    x = 37,363.60

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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.