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Finding the Fourth Proportional to 65,334.80, 97,872.60 and 38,961.20

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Solution

The fourth proportional to 65,334.80, 97,872.60 and 38,961.20 is: 58,364.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,334.80 : 97,872.60 = 38,961.20 : x
  2. Step 2: Convert to fraction form
    65,334.80/97,872.60 = 38,961.20/x
  3. Step 3: Cross multiply
    65,334.80x = 97,872.60 × 38,961.20
  4. Step 4: Simplify right side
    65,334.80x = 3,813,233,943.12
  5. Step 5: Solve for x
    x = 3,813,233,943.12/65,334.80
  6. Step 6: Final answer
    x = 58,364.52

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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.