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Finding the Fourth Proportional to 43,910.64, 65,859.04 and 14,328.32

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Solution

The fourth proportional to 43,910.64, 65,859.04 and 14,328.32 is: 21,490.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,910.64 : 65,859.04 = 14,328.32 : x
  2. Step 2: Convert to fraction form
    43,910.64/65,859.04 = 14,328.32/x
  3. Step 3: Cross multiply
    43,910.64x = 65,859.04 × 14,328.32
  4. Step 4: Simplify right side
    43,910.64x = 943,649,400.01
  5. Step 5: Solve for x
    x = 943,649,400.01/43,910.64
  6. Step 6: Final answer
    x = 21,490.22

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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.