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Finding the Fourth Proportional to 71,303.94, 106,948.94 and 18,713.42

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Solution

The fourth proportional to 71,303.94, 106,948.94 and 18,713.42 is: 28,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,303.94 : 106,948.94 = 18,713.42 : x
  2. Step 2: Convert to fraction form
    71,303.94/106,948.94 = 18,713.42/x
  3. Step 3: Cross multiply
    71,303.94x = 106,948.94 × 18,713.42
  4. Step 4: Simplify right side
    71,303.94x = 2,001,380,511.31
  5. Step 5: Solve for x
    x = 2,001,380,511.31/71,303.94
  6. Step 6: Final answer
    x = 28,068.30

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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.