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Finding the Fourth Proportional to 43,460.88, 65,220.48 and 15,381

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Solution

The fourth proportional to 43,460.88, 65,220.48 and 15,381 is: 23,081.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,460.88 : 65,220.48 = 15,381 : x
  2. Step 2: Convert to fraction form
    43,460.88/65,220.48 = 15,381/x
  3. Step 3: Cross multiply
    43,460.88x = 65,220.48 × 15,381
  4. Step 4: Simplify right side
    43,460.88x = 1,003,156,202.88
  5. Step 5: Solve for x
    x = 1,003,156,202.88/43,460.88
  6. Step 6: Final answer
    x = 23,081.82

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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.