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Finding the Fourth Proportional to 71,065.32, 106,578.52 and 26,688.64

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Solution

The fourth proportional to 71,065.32, 106,578.52 and 26,688.64 is: 40,025.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,065.32 : 106,578.52 = 26,688.64 : x
  2. Step 2: Convert to fraction form
    71,065.32/106,578.52 = 26,688.64/x
  3. Step 3: Cross multiply
    71,065.32x = 106,578.52 × 26,688.64
  4. Step 4: Simplify right side
    71,065.32x = 2,844,435,752.01
  5. Step 5: Solve for x
    x = 2,844,435,752.01/71,065.32
  6. Step 6: Final answer
    x = 40,025.65

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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.