Home / 74,121.53-102,287.77-40,130.04

Finding the Fourth Proportional to 74,121.53, 102,287.77 and 40,130.04

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Solution

The fourth proportional to 74,121.53, 102,287.77 and 40,130.04 is: 55,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,121.53 : 102,287.77 = 40,130.04 : x
  2. Step 2: Convert to fraction form
    74,121.53/102,287.77 = 40,130.04/x
  3. Step 3: Cross multiply
    74,121.53x = 102,287.77 × 40,130.04
  4. Step 4: Simplify right side
    74,121.53x = 4,104,811,790.17
  5. Step 5: Solve for x
    x = 4,104,811,790.17/74,121.53
  6. Step 6: Final answer
    x = 55,379.48

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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.