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Finding the Fourth Proportional to 71,011.46, 97,999 and 40,806.56

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Solution

The fourth proportional to 71,011.46, 97,999 and 40,806.56 is: 56,314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,011.46 : 97,999 = 40,806.56 : x
  2. Step 2: Convert to fraction form
    71,011.46/97,999 = 40,806.56/x
  3. Step 3: Cross multiply
    71,011.46x = 97,999 × 40,806.56
  4. Step 4: Simplify right side
    71,011.46x = 3,999,002,073.44
  5. Step 5: Solve for x
    x = 3,999,002,073.44/71,011.46
  6. Step 6: Final answer
    x = 56,314.88

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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.