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Finding the Fourth Proportional to 64,728.64, 97,130.70 and 27,286.42

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Solution

The fourth proportional to 64,728.64, 97,130.70 and 27,286.42 is: 40,945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,728.64 : 97,130.70 = 27,286.42 : x
  2. Step 2: Convert to fraction form
    64,728.64/97,130.70 = 27,286.42/x
  3. Step 3: Cross multiply
    64,728.64x = 97,130.70 × 27,286.42
  4. Step 4: Simplify right side
    64,728.64x = 2,650,349,075.09
  5. Step 5: Solve for x
    x = 2,650,349,075.09/64,728.64
  6. Step 6: Final answer
    x = 40,945.54

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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.