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Finding the Fourth Proportional to 76,600.48, 105,695.68 and 42,604.48

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Solution

The fourth proportional to 76,600.48, 105,695.68 and 42,604.48 is: 58,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,600.48 : 105,695.68 = 42,604.48 : x
  2. Step 2: Convert to fraction form
    76,600.48/105,695.68 = 42,604.48/x
  3. Step 3: Cross multiply
    76,600.48x = 105,695.68 × 42,604.48
  4. Step 4: Simplify right side
    76,600.48x = 4,503,109,484.65
  5. Step 5: Solve for x
    x = 4,503,109,484.65/76,600.48
  6. Step 6: Final answer
    x = 58,786.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.