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Finding the Fourth Proportional to 40,802.40, 61,174.80 and 15,832.80

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Solution

The fourth proportional to 40,802.40, 61,174.80 and 15,832.80 is: 23,738.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,802.40 : 61,174.80 = 15,832.80 : x
  2. Step 2: Convert to fraction form
    40,802.40/61,174.80 = 15,832.80/x
  3. Step 3: Cross multiply
    40,802.40x = 61,174.80 × 15,832.80
  4. Step 4: Simplify right side
    40,802.40x = 968,568,373.44
  5. Step 5: Solve for x
    x = 968,568,373.44/40,802.40
  6. Step 6: Final answer
    x = 23,738.02

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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.