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Finding the Fourth Proportional to 71,065.80, 106,579.20 and 26,689.20

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Solution

The fourth proportional to 71,065.80, 106,579.20 and 26,689.20 is: 40,026.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,065.80 : 106,579.20 = 26,689.20 : x
  2. Step 2: Convert to fraction form
    71,065.80/106,579.20 = 26,689.20/x
  3. Step 3: Cross multiply
    71,065.80x = 106,579.20 × 26,689.20
  4. Step 4: Simplify right side
    71,065.80x = 2,844,513,584.64
  5. Step 5: Solve for x
    x = 2,844,513,584.64/71,065.80
  6. Step 6: Final answer
    x = 40,026.48

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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.