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Finding the Fourth Proportional to 65,548.49, 90,472.09 and 41,670.55

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Solution

The fourth proportional to 65,548.49, 90,472.09 and 41,670.55 is: 57,515.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,548.49 : 90,472.09 = 41,670.55 : x
  2. Step 2: Convert to fraction form
    65,548.49/90,472.09 = 41,670.55/x
  3. Step 3: Cross multiply
    65,548.49x = 90,472.09 × 41,670.55
  4. Step 4: Simplify right side
    65,548.49x = 3,770,021,837.00
  5. Step 5: Solve for x
    x = 3,770,021,837.00/65,548.49
  6. Step 6: Final answer
    x = 57,515.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.