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Finding the Fourth Proportional to 70,353.28, 105,529.04 and 28,252

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Solution

The fourth proportional to 70,353.28, 105,529.04 and 28,252 is: 42,377.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,353.28 : 105,529.04 = 28,252 : x
  2. Step 2: Convert to fraction form
    70,353.28/105,529.04 = 28,252/x
  3. Step 3: Cross multiply
    70,353.28x = 105,529.04 × 28,252
  4. Step 4: Simplify right side
    70,353.28x = 2,981,406,438.08
  5. Step 5: Solve for x
    x = 2,981,406,438.08/70,353.28
  6. Step 6: Final answer
    x = 42,377.65

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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.