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Finding the Fourth Proportional to 71,569.60, 107,440.80 and 71,051.20

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Solution

The fourth proportional to 71,569.60, 107,440.80 and 71,051.20 is: 106,662.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,569.60 : 107,440.80 = 71,051.20 : x
  2. Step 2: Convert to fraction form
    71,569.60/107,440.80 = 71,051.20/x
  3. Step 3: Cross multiply
    71,569.60x = 107,440.80 × 71,051.20
  4. Step 4: Simplify right side
    71,569.60x = 7,633,797,768.96
  5. Step 5: Solve for x
    x = 7,633,797,768.96/71,569.60
  6. Step 6: Final answer
    x = 106,662.57

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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.