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Finding the Fourth Proportional to 70,363.63, 105,581.90 and 40,401.73

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Solution

The fourth proportional to 70,363.63, 105,581.90 and 40,401.73 is: 60,623.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,363.63 : 105,581.90 = 40,401.73 : x
  2. Step 2: Convert to fraction form
    70,363.63/105,581.90 = 40,401.73/x
  3. Step 3: Cross multiply
    70,363.63x = 105,581.90 × 40,401.73
  4. Step 4: Simplify right side
    70,363.63x = 4,265,691,416.69
  5. Step 5: Solve for x
    x = 4,265,691,416.69/70,363.63
  6. Step 6: Final answer
    x = 60,623.53

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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.