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Finding the Fourth Proportional to 43,381.72, 65,076.53 and 16,719.15

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Solution

The fourth proportional to 43,381.72, 65,076.53 and 16,719.15 is: 25,080.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,381.72 : 65,076.53 = 16,719.15 : x
  2. Step 2: Convert to fraction form
    43,381.72/65,076.53 = 16,719.15/x
  3. Step 3: Cross multiply
    43,381.72x = 65,076.53 × 16,719.15
  4. Step 4: Simplify right side
    43,381.72x = 1,088,024,182.95
  5. Step 5: Solve for x
    x = 1,088,024,182.95/43,381.72
  6. Step 6: Final answer
    x = 25,080.25

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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.