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Finding the Fourth Proportional to 40,652.53, 60,963.64 and 13,991.06

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Solution

The fourth proportional to 40,652.53, 60,963.64 and 13,991.06 is: 20,981.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,652.53 : 60,963.64 = 13,991.06 : x
  2. Step 2: Convert to fraction form
    40,652.53/60,963.64 = 13,991.06/x
  3. Step 3: Cross multiply
    40,652.53x = 60,963.64 × 13,991.06
  4. Step 4: Simplify right side
    40,652.53x = 852,946,114.96
  5. Step 5: Solve for x
    x = 852,946,114.96/40,652.53
  6. Step 6: Final answer
    x = 20,981.38

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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.