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Finding the Fourth Proportional to 76,674.94, 105,811.38 and 42,682.68

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Solution

The fourth proportional to 76,674.94, 105,811.38 and 42,682.68 is: 58,902.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,674.94 : 105,811.38 = 42,682.68 : x
  2. Step 2: Convert to fraction form
    76,674.94/105,811.38 = 42,682.68/x
  3. Step 3: Cross multiply
    76,674.94x = 105,811.38 × 42,682.68
  4. Step 4: Simplify right side
    76,674.94x = 4,516,313,272.90
  5. Step 5: Solve for x
    x = 4,516,313,272.90/76,674.94
  6. Step 6: Final answer
    x = 58,902.08

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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.