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Finding the Fourth Proportional to 56,390.34, 84,560.04 and 16,939.74

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Solution

The fourth proportional to 56,390.34, 84,560.04 and 16,939.74 is: 25,401.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,390.34 : 84,560.04 = 16,939.74 : x
  2. Step 2: Convert to fraction form
    56,390.34/84,560.04 = 16,939.74/x
  3. Step 3: Cross multiply
    56,390.34x = 84,560.04 × 16,939.74
  4. Step 4: Simplify right side
    56,390.34x = 1,432,425,091.99
  5. Step 5: Solve for x
    x = 1,432,425,091.99/56,390.34
  6. Step 6: Final answer
    x = 25,401.96

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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.