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Finding the Fourth Proportional to 70,456.74, 105,730.92 and 30,514.73

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Solution

The fourth proportional to 70,456.74, 105,730.92 and 30,514.73 is: 45,791.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,456.74 : 105,730.92 = 30,514.73 : x
  2. Step 2: Convert to fraction form
    70,456.74/105,730.92 = 30,514.73/x
  3. Step 3: Cross multiply
    70,456.74x = 105,730.92 × 30,514.73
  4. Step 4: Simplify right side
    70,456.74x = 3,226,350,476.45
  5. Step 5: Solve for x
    x = 3,226,350,476.45/70,456.74
  6. Step 6: Final answer
    x = 45,791.94

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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.