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Finding the Fourth Proportional to 65,410.40, 97,896.90 and 45,727.40

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Solution

The fourth proportional to 65,410.40, 97,896.90 and 45,727.40 is: 68,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,410.40 : 97,896.90 = 45,727.40 : x
  2. Step 2: Convert to fraction form
    65,410.40/97,896.90 = 45,727.40/x
  3. Step 3: Cross multiply
    65,410.40x = 97,896.90 × 45,727.40
  4. Step 4: Simplify right side
    65,410.40x = 4,476,570,705.06
  5. Step 5: Solve for x
    x = 4,476,570,705.06/65,410.40
  6. Step 6: Final answer
    x = 68,438.21

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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.