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Finding the Fourth Proportional to 74,808, 112,212 and 37,872

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Solution

The fourth proportional to 74,808, 112,212 and 37,872 is: 56,808

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,808 : 112,212 = 37,872 : x
  2. Step 2: Convert to fraction form
    74,808/112,212 = 37,872/x
  3. Step 3: Cross multiply
    74,808x = 112,212 × 37,872
  4. Step 4: Simplify right side
    74,808x = 4,249,692,864
  5. Step 5: Solve for x
    x = 4,249,692,864/74,808
  6. Step 6: Final answer
    x = 56,808

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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.