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Finding the Fourth Proportional to 49,508.28, 68,310.72 and 31,364.28

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Solution

The fourth proportional to 49,508.28, 68,310.72 and 31,364.28 is: 43,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,508.28 : 68,310.72 = 31,364.28 : x
  2. Step 2: Convert to fraction form
    49,508.28/68,310.72 = 31,364.28/x
  3. Step 3: Cross multiply
    49,508.28x = 68,310.72 × 31,364.28
  4. Step 4: Simplify right side
    49,508.28x = 2,142,516,549.08
  5. Step 5: Solve for x
    x = 2,142,516,549.08/49,508.28
  6. Step 6: Final answer
    x = 43,275.92

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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.