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Finding the Fourth Proportional to 70,113.20, 105,101.76 and 27,981.12

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Solution

The fourth proportional to 70,113.20, 105,101.76 and 27,981.12 is: 41,944.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,113.20 : 105,101.76 = 27,981.12 : x
  2. Step 2: Convert to fraction form
    70,113.20/105,101.76 = 27,981.12/x
  3. Step 3: Cross multiply
    70,113.20x = 105,101.76 × 27,981.12
  4. Step 4: Simplify right side
    70,113.20x = 2,940,864,958.77
  5. Step 5: Solve for x
    x = 2,940,864,958.77/70,113.20
  6. Step 6: Final answer
    x = 41,944.53

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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.