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Finding the Fourth Proportional to 34,495.20, 51,742.80 and 9,871.20

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Solution

The fourth proportional to 34,495.20, 51,742.80 and 9,871.20 is: 14,806.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,495.20 : 51,742.80 = 9,871.20 : x
  2. Step 2: Convert to fraction form
    34,495.20/51,742.80 = 9,871.20/x
  3. Step 3: Cross multiply
    34,495.20x = 51,742.80 × 9,871.20
  4. Step 4: Simplify right side
    34,495.20x = 510,763,527.36
  5. Step 5: Solve for x
    x = 510,763,527.36/34,495.20
  6. Step 6: Final answer
    x = 14,806.80

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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.