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Finding the Fourth Proportional to 75,318.71, 112,910.94 and 28,604.39

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Solution

The fourth proportional to 75,318.71, 112,910.94 and 28,604.39 is: 42,881.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,318.71 : 112,910.94 = 28,604.39 : x
  2. Step 2: Convert to fraction form
    75,318.71/112,910.94 = 28,604.39/x
  3. Step 3: Cross multiply
    75,318.71x = 112,910.94 × 28,604.39
  4. Step 4: Simplify right side
    75,318.71x = 3,229,747,998.47
  5. Step 5: Solve for x
    x = 3,229,747,998.47/75,318.71
  6. Step 6: Final answer
    x = 42,881.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.