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Finding the Fourth Proportional to 70,406.70, 97,157.53 and 40,190.82

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Solution

The fourth proportional to 70,406.70, 97,157.53 and 40,190.82 is: 55,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,406.70 : 97,157.53 = 40,190.82 : x
  2. Step 2: Convert to fraction form
    70,406.70/97,157.53 = 40,190.82/x
  3. Step 3: Cross multiply
    70,406.70x = 97,157.53 × 40,190.82
  4. Step 4: Simplify right side
    70,406.70x = 3,904,840,234.58
  5. Step 5: Solve for x
    x = 3,904,840,234.58/70,406.70
  6. Step 6: Final answer
    x = 55,461.21

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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.