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Finding the Fourth Proportional to 70,310.96, 105,433.63 and 40,737.25

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Solution

The fourth proportional to 70,310.96, 105,433.63 and 40,737.25 is: 61,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,310.96 : 105,433.63 = 40,737.25 : x
  2. Step 2: Convert to fraction form
    70,310.96/105,433.63 = 40,737.25/x
  3. Step 3: Cross multiply
    70,310.96x = 105,433.63 × 40,737.25
  4. Step 4: Simplify right side
    70,310.96x = 4,295,076,173.67
  5. Step 5: Solve for x
    x = 4,295,076,173.67/70,310.96
  6. Step 6: Final answer
    x = 61,086.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.