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Finding the Fourth Proportional to 50,971.68, 70,375.20 and 39,013.68

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Solution

The fourth proportional to 50,971.68, 70,375.20 and 39,013.68 is: 53,865.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,971.68 : 70,375.20 = 39,013.68 : x
  2. Step 2: Convert to fraction form
    50,971.68/70,375.20 = 39,013.68/x
  3. Step 3: Cross multiply
    50,971.68x = 70,375.20 × 39,013.68
  4. Step 4: Simplify right side
    50,971.68x = 2,745,595,532.74
  5. Step 5: Solve for x
    x = 2,745,595,532.74/50,971.68
  6. Step 6: Final answer
    x = 53,865.12

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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.