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Finding the Fourth Proportional to 43,879.41, 65,824.30 and 15,407.64

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Solution

The fourth proportional to 43,879.41, 65,824.30 and 15,407.64 is: 23,113.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,879.41 : 65,824.30 = 15,407.64 : x
  2. Step 2: Convert to fraction form
    43,879.41/65,824.30 = 15,407.64/x
  3. Step 3: Cross multiply
    43,879.41x = 65,824.30 × 15,407.64
  4. Step 4: Simplify right side
    43,879.41x = 1,014,197,040.61
  5. Step 5: Solve for x
    x = 1,014,197,040.61/43,879.41
  6. Step 6: Final answer
    x = 23,113.28

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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.