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Finding the Fourth Proportional to 56,251.60, 84,378.40 and 16,809.20

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Solution

The fourth proportional to 56,251.60, 84,378.40 and 16,809.20 is: 25,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,251.60 : 84,378.40 = 16,809.20 : x
  2. Step 2: Convert to fraction form
    56,251.60/84,378.40 = 16,809.20/x
  3. Step 3: Cross multiply
    56,251.60x = 84,378.40 × 16,809.20
  4. Step 4: Simplify right side
    56,251.60x = 1,418,333,401.28
  5. Step 5: Solve for x
    x = 1,418,333,401.28/56,251.60
  6. Step 6: Final answer
    x = 25,214.10

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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.