Home / 74,379.02-102,643.22-40,387.51

Finding the Fourth Proportional to 74,379.02, 102,643.22 and 40,387.51

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Solution

The fourth proportional to 74,379.02, 102,643.22 and 40,387.51 is: 55,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,379.02 : 102,643.22 = 40,387.51 : x
  2. Step 2: Convert to fraction form
    74,379.02/102,643.22 = 40,387.51/x
  3. Step 3: Cross multiply
    74,379.02x = 102,643.22 × 40,387.51
  4. Step 4: Simplify right side
    74,379.02x = 4,145,503,359.03
  5. Step 5: Solve for x
    x = 4,145,503,359.03/74,379.02
  6. Step 6: Final answer
    x = 55,734.85

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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.