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Finding the Fourth Proportional to 76,375.48, 105,394.47 and 42,383.56

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Solution

The fourth proportional to 76,375.48, 105,394.47 and 42,383.56 is: 58,487.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,375.48 : 105,394.47 = 42,383.56 : x
  2. Step 2: Convert to fraction form
    76,375.48/105,394.47 = 42,383.56/x
  3. Step 3: Cross multiply
    76,375.48x = 105,394.47 × 42,383.56
  4. Step 4: Simplify right side
    76,375.48x = 4,466,992,842.91
  5. Step 5: Solve for x
    x = 4,466,992,842.91/76,375.48
  6. Step 6: Final answer
    x = 58,487.26

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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.