Home / 74,201.40-102,405.06-42,372.72

Finding the Fourth Proportional to 74,201.40, 102,405.06 and 42,372.72

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Solution

The fourth proportional to 74,201.40, 102,405.06 and 42,372.72 is: 58,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,201.40 : 102,405.06 = 42,372.72 : x
  2. Step 2: Convert to fraction form
    74,201.40/102,405.06 = 42,372.72/x
  3. Step 3: Cross multiply
    74,201.40x = 102,405.06 × 42,372.72
  4. Step 4: Simplify right side
    74,201.40x = 4,339,180,933.96
  5. Step 5: Solve for x
    x = 4,339,180,933.96/74,201.40
  6. Step 6: Final answer
    x = 58,478.42

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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.