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Finding the Fourth Proportional to 56,314.40, 84,460.80 and 16,872.80

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Solution

The fourth proportional to 56,314.40, 84,460.80 and 16,872.80 is: 25,305.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,314.40 : 84,460.80 = 16,872.80 : x
  2. Step 2: Convert to fraction form
    56,314.40/84,460.80 = 16,872.80/x
  3. Step 3: Cross multiply
    56,314.40x = 84,460.80 × 16,872.80
  4. Step 4: Simplify right side
    56,314.40x = 1,425,090,186.24
  5. Step 5: Solve for x
    x = 1,425,090,186.24/56,314.40
  6. Step 6: Final answer
    x = 25,305.96

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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.