Home / 74,323.36-102,565.92-40,331.60

Finding the Fourth Proportional to 74,323.36, 102,565.92 and 40,331.60

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Solution

The fourth proportional to 74,323.36, 102,565.92 and 40,331.60 is: 55,657.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,323.36 : 102,565.92 = 40,331.60 : x
  2. Step 2: Convert to fraction form
    74,323.36/102,565.92 = 40,331.60/x
  3. Step 3: Cross multiply
    74,323.36x = 102,565.92 × 40,331.60
  4. Step 4: Simplify right side
    74,323.36x = 4,136,647,659.07
  5. Step 5: Solve for x
    x = 4,136,647,659.07/74,323.36
  6. Step 6: Final answer
    x = 55,657.44

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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.