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Finding the Fourth Proportional to 76,203.86, 105,162.82 and 45,608.46

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Solution

The fourth proportional to 76,203.86, 105,162.82 and 45,608.46 is: 62,940.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,203.86 : 105,162.82 = 45,608.46 : x
  2. Step 2: Convert to fraction form
    76,203.86/105,162.82 = 45,608.46/x
  3. Step 3: Cross multiply
    76,203.86x = 105,162.82 × 45,608.46
  4. Step 4: Simplify right side
    76,203.86x = 4,796,314,269.46
  5. Step 5: Solve for x
    x = 4,796,314,269.46/76,203.86
  6. Step 6: Final answer
    x = 62,940.57

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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.