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Finding the Fourth Proportional to 70,497.27, 105,750.09 and 28,370.79

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Solution

The fourth proportional to 70,497.27, 105,750.09 and 28,370.79 is: 42,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,497.27 : 105,750.09 = 28,370.79 : x
  2. Step 2: Convert to fraction form
    70,497.27/105,750.09 = 28,370.79/x
  3. Step 3: Cross multiply
    70,497.27x = 105,750.09 × 28,370.79
  4. Step 4: Simplify right side
    70,497.27x = 3,000,213,595.87
  5. Step 5: Solve for x
    x = 3,000,213,595.87/70,497.27
  6. Step 6: Final answer
    x = 42,557.87

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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.