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Finding the Fourth Proportional to 71,364.60, 106,917.30 and 58,145.40

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Solution

The fourth proportional to 71,364.60, 106,917.30 and 58,145.40 is: 87,112.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,364.60 : 106,917.30 = 58,145.40 : x
  2. Step 2: Convert to fraction form
    71,364.60/106,917.30 = 58,145.40/x
  3. Step 3: Cross multiply
    71,364.60x = 106,917.30 × 58,145.40
  4. Step 4: Simplify right side
    71,364.60x = 6,216,749,175.42
  5. Step 5: Solve for x
    x = 6,216,749,175.42/71,364.60
  6. Step 6: Final answer
    x = 87,112.51

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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.