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Finding the Fourth Proportional to 113,256, 169,885.44 and 39,384

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Solution

The fourth proportional to 113,256, 169,885.44 and 39,384 is: 59,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,256 : 169,885.44 = 39,384 : x
  2. Step 2: Convert to fraction form
    113,256/169,885.44 = 39,384/x
  3. Step 3: Cross multiply
    113,256x = 169,885.44 × 39,384
  4. Step 4: Simplify right side
    113,256x = 6,690,768,168.96
  5. Step 5: Solve for x
    x = 6,690,768,168.96/113,256
  6. Step 6: Final answer
    x = 59,076.50

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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.