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Finding the Fourth Proportional to 69,140, 103,710 and 19,892

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Solution

The fourth proportional to 69,140, 103,710 and 19,892 is: 29,838

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,140 : 103,710 = 19,892 : x
  2. Step 2: Convert to fraction form
    69,140/103,710 = 19,892/x
  3. Step 3: Cross multiply
    69,140x = 103,710 × 19,892
  4. Step 4: Simplify right side
    69,140x = 2,062,999,320
  5. Step 5: Solve for x
    x = 2,062,999,320/69,140
  6. Step 6: Final answer
    x = 29,838

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