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Finding the Fourth Proportional to 71,126.46, 98,154.72 and 38,861.46

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Solution

The fourth proportional to 71,126.46, 98,154.72 and 38,861.46 is: 53,628.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,126.46 : 98,154.72 = 38,861.46 : x
  2. Step 2: Convert to fraction form
    71,126.46/98,154.72 = 38,861.46/x
  3. Step 3: Cross multiply
    71,126.46x = 98,154.72 × 38,861.46
  4. Step 4: Simplify right side
    71,126.46x = 3,814,435,725.09
  5. Step 5: Solve for x
    x = 3,814,435,725.09/71,126.46
  6. Step 6: Final answer
    x = 53,628.93

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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.