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Finding the Fourth Proportional to 71,362.60, 106,914.30 and 58,143.40

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Solution

The fourth proportional to 71,362.60, 106,914.30 and 58,143.40 is: 87,109.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,362.60 : 106,914.30 = 58,143.40 : x
  2. Step 2: Convert to fraction form
    71,362.60/106,914.30 = 58,143.40/x
  3. Step 3: Cross multiply
    71,362.60x = 106,914.30 × 58,143.40
  4. Step 4: Simplify right side
    71,362.60x = 6,216,360,910.62
  5. Step 5: Solve for x
    x = 6,216,360,910.62/71,362.60
  6. Step 6: Final answer
    x = 87,109.51

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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.