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Finding the Fourth Proportional to 51,821.60, 77,713.20 and 16,762.40

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Solution

The fourth proportional to 51,821.60, 77,713.20 and 16,762.40 is: 25,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,821.60 : 77,713.20 = 16,762.40 : x
  2. Step 2: Convert to fraction form
    51,821.60/77,713.20 = 16,762.40/x
  3. Step 3: Cross multiply
    51,821.60x = 77,713.20 × 16,762.40
  4. Step 4: Simplify right side
    51,821.60x = 1,302,659,743.68
  5. Step 5: Solve for x
    x = 1,302,659,743.68/51,821.60
  6. Step 6: Final answer
    x = 25,137.39

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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.