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Finding the Fourth Proportional to 40,643.70, 60,965.16 and 11,061.30

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Solution

The fourth proportional to 40,643.70, 60,965.16 and 11,061.30 is: 16,591.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,643.70 : 60,965.16 = 11,061.30 : x
  2. Step 2: Convert to fraction form
    40,643.70/60,965.16 = 11,061.30/x
  3. Step 3: Cross multiply
    40,643.70x = 60,965.16 × 11,061.30
  4. Step 4: Simplify right side
    40,643.70x = 674,353,924.31
  5. Step 5: Solve for x
    x = 674,353,924.31/40,643.70
  6. Step 6: Final answer
    x = 16,591.84

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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.