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Finding the Fourth Proportional to 70,383.53, 105,575.60 and 20,463.84

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Solution

The fourth proportional to 70,383.53, 105,575.60 and 20,463.84 is: 30,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,383.53 : 105,575.60 = 20,463.84 : x
  2. Step 2: Convert to fraction form
    70,383.53/105,575.60 = 20,463.84/x
  3. Step 3: Cross multiply
    70,383.53x = 105,575.60 × 20,463.84
  4. Step 4: Simplify right side
    70,383.53x = 2,160,482,237.46
  5. Step 5: Solve for x
    x = 2,160,482,237.46/70,383.53
  6. Step 6: Final answer
    x = 30,695.85

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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.