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Finding the Fourth Proportional to 65,172.74, 97,757.40 and 20,802.20

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Solution

The fourth proportional to 65,172.74, 97,757.40 and 20,802.20 is: 31,202.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,172.74 : 97,757.40 = 20,802.20 : x
  2. Step 2: Convert to fraction form
    65,172.74/97,757.40 = 20,802.20/x
  3. Step 3: Cross multiply
    65,172.74x = 97,757.40 × 20,802.20
  4. Step 4: Simplify right side
    65,172.74x = 2,033,568,986.28
  5. Step 5: Solve for x
    x = 2,033,568,986.28/65,172.74
  6. Step 6: Final answer
    x = 31,202.75

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1.5x scale

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.