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Finding the Fourth Proportional to 71,182.40, 106,579.20 and 51,353.60

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Solution

The fourth proportional to 71,182.40, 106,579.20 and 51,353.60 is: 76,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,182.40 : 106,579.20 = 51,353.60 : x
  2. Step 2: Convert to fraction form
    71,182.40/106,579.20 = 51,353.60/x
  3. Step 3: Cross multiply
    71,182.40x = 106,579.20 × 51,353.60
  4. Step 4: Simplify right side
    71,182.40x = 5,473,225,605.12
  5. Step 5: Solve for x
    x = 5,473,225,605.12/71,182.40
  6. Step 6: Final answer
    x = 76,890.15

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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.