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Finding the Fourth Proportional to 70,640.39, 105,960.64 and 44,363.59

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Solution

The fourth proportional to 70,640.39, 105,960.64 and 44,363.59 is: 66,545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,640.39 : 105,960.64 = 44,363.59 : x
  2. Step 2: Convert to fraction form
    70,640.39/105,960.64 = 44,363.59/x
  3. Step 3: Cross multiply
    70,640.39x = 105,960.64 × 44,363.59
  4. Step 4: Simplify right side
    70,640.39x = 4,700,794,389.10
  5. Step 5: Solve for x
    x = 4,700,794,389.10/70,640.39
  6. Step 6: Final answer
    x = 66,545.42

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1.5x scale

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.