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Finding the Fourth Proportional to 47,242.56, 65,172.96 and 30,480.96

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Solution

The fourth proportional to 47,242.56, 65,172.96 and 30,480.96 is: 42,049.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,242.56 : 65,172.96 = 30,480.96 : x
  2. Step 2: Convert to fraction form
    47,242.56/65,172.96 = 30,480.96/x
  3. Step 3: Cross multiply
    47,242.56x = 65,172.96 × 30,480.96
  4. Step 4: Simplify right side
    47,242.56x = 1,986,534,386.84
  5. Step 5: Solve for x
    x = 1,986,534,386.84/47,242.56
  6. Step 6: Final answer
    x = 42,049.68

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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.