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Finding the Fourth Proportional to 112,996, 169,494 and 39,124

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Solution

The fourth proportional to 112,996, 169,494 and 39,124 is: 58,686

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,996 : 169,494 = 39,124 : x
  2. Step 2: Convert to fraction form
    112,996/169,494 = 39,124/x
  3. Step 3: Cross multiply
    112,996x = 169,494 × 39,124
  4. Step 4: Simplify right side
    112,996x = 6,631,283,256
  5. Step 5: Solve for x
    x = 6,631,283,256/112,996
  6. Step 6: Final answer
    x = 58,686

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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.