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Finding the Fourth Proportional to 76,943.67, 106,187.58 and 42,958.86

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Solution

The fourth proportional to 76,943.67, 106,187.58 and 42,958.86 is: 59,286.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,943.67 : 106,187.58 = 42,958.86 : x
  2. Step 2: Convert to fraction form
    76,943.67/106,187.58 = 42,958.86/x
  3. Step 3: Cross multiply
    76,943.67x = 106,187.58 × 42,958.86
  4. Step 4: Simplify right side
    76,943.67x = 4,561,697,382.96
  5. Step 5: Solve for x
    x = 4,561,697,382.96/76,943.67
  6. Step 6: Final answer
    x = 59,286.19

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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.