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Finding the Fourth Proportional to 45,407.63, 68,108.71 and 16,939.10

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Solution

The fourth proportional to 45,407.63, 68,108.71 and 16,939.10 is: 25,407.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,407.63 : 68,108.71 = 16,939.10 : x
  2. Step 2: Convert to fraction form
    45,407.63/68,108.71 = 16,939.10/x
  3. Step 3: Cross multiply
    45,407.63x = 68,108.71 × 16,939.10
  4. Step 4: Simplify right side
    45,407.63x = 1,153,700,377.49
  5. Step 5: Solve for x
    x = 1,153,700,377.49/45,407.63
  6. Step 6: Final answer
    x = 25,407.63

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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.