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Finding the Fourth Proportional to 71,146.40, 106,579.20 and 36,111.20

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Solution

The fourth proportional to 71,146.40, 106,579.20 and 36,111.20 is: 54,095.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,146.40 : 106,579.20 = 36,111.20 : x
  2. Step 2: Convert to fraction form
    71,146.40/106,579.20 = 36,111.20/x
  3. Step 3: Cross multiply
    71,146.40x = 106,579.20 × 36,111.20
  4. Step 4: Simplify right side
    71,146.40x = 3,848,702,807.04
  5. Step 5: Solve for x
    x = 3,848,702,807.04/71,146.40
  6. Step 6: Final answer
    x = 54,095.54

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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.