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Finding the Fourth Proportional to 69,529.88, 103,400.40 and 67,315.52

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Solution

The fourth proportional to 69,529.88, 103,400.40 and 67,315.52 is: 100,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,529.88 : 103,400.40 = 67,315.52 : x
  2. Step 2: Convert to fraction form
    69,529.88/103,400.40 = 67,315.52/x
  3. Step 3: Cross multiply
    69,529.88x = 103,400.40 × 67,315.52
  4. Step 4: Simplify right side
    69,529.88x = 6,960,451,694.21
  5. Step 5: Solve for x
    x = 6,960,451,694.21/69,529.88
  6. Step 6: Final answer
    x = 100,107.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.