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Finding the Fourth Proportional to 113,897.92, 170,728 and 38,996

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Solution

The fourth proportional to 113,897.92, 170,728 and 38,996 is: 58,453.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,897.92 : 170,728 = 38,996 : x
  2. Step 2: Convert to fraction form
    113,897.92/170,728 = 38,996/x
  3. Step 3: Cross multiply
    113,897.92x = 170,728 × 38,996
  4. Step 4: Simplify right side
    113,897.92x = 6,657,709,088
  5. Step 5: Solve for x
    x = 6,657,709,088/113,897.92
  6. Step 6: Final answer
    x = 58,453.30

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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.