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Finding the Fourth Proportional to 40,869, 61,318.26 and 20,107.08

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Solution

The fourth proportional to 40,869, 61,318.26 and 20,107.08 is: 30,167.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,869 : 61,318.26 = 20,107.08 : x
  2. Step 2: Convert to fraction form
    40,869/61,318.26 = 20,107.08/x
  3. Step 3: Cross multiply
    40,869x = 61,318.26 × 20,107.08
  4. Step 4: Simplify right side
    40,869x = 1,232,931,159.28
  5. Step 5: Solve for x
    x = 1,232,931,159.28/40,869
  6. Step 6: Final answer
    x = 30,167.88

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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.