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Finding the Fourth Proportional to 70,363.87, 105,546.35 and 20,447.35

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Solution

The fourth proportional to 70,363.87, 105,546.35 and 20,447.35 is: 30,671.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,363.87 : 105,546.35 = 20,447.35 : x
  2. Step 2: Convert to fraction form
    70,363.87/105,546.35 = 20,447.35/x
  3. Step 3: Cross multiply
    70,363.87x = 105,546.35 × 20,447.35
  4. Step 4: Simplify right side
    70,363.87x = 2,158,143,159.67
  5. Step 5: Solve for x
    x = 2,158,143,159.67/70,363.87
  6. Step 6: Final answer
    x = 30,671.18

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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.