Home / 74,410.15-102,687.11-40,419.30

Finding the Fourth Proportional to 74,410.15, 102,687.11 and 40,419.30

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Solution

The fourth proportional to 74,410.15, 102,687.11 and 40,419.30 is: 55,779.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,410.15 : 102,687.11 = 40,419.30 : x
  2. Step 2: Convert to fraction form
    74,410.15/102,687.11 = 40,419.30/x
  3. Step 3: Cross multiply
    74,410.15x = 102,687.11 × 40,419.30
  4. Step 4: Simplify right side
    74,410.15x = 4,150,541,105.22
  5. Step 5: Solve for x
    x = 4,150,541,105.22/74,410.15
  6. Step 6: Final answer
    x = 55,779.23

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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.