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Finding the Fourth Proportional to 43,981.78, 65,981.92 and 14,397.32

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Solution

The fourth proportional to 43,981.78, 65,981.92 and 14,397.32 is: 21,599.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,981.78 : 65,981.92 = 14,397.32 : x
  2. Step 2: Convert to fraction form
    43,981.78/65,981.92 = 14,397.32/x
  3. Step 3: Cross multiply
    43,981.78x = 65,981.92 × 14,397.32
  4. Step 4: Simplify right side
    43,981.78x = 949,962,816.45
  5. Step 5: Solve for x
    x = 949,962,816.45/43,981.78
  6. Step 6: Final answer
    x = 21,599.01

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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.