Home / 74,779.45-112,190.34-30,438.02

Finding the Fourth Proportional to 74,779.45, 112,190.34 and 30,438.02

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Solution

The fourth proportional to 74,779.45, 112,190.34 and 30,438.02 is: 45,665.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,779.45 : 112,190.34 = 30,438.02 : x
  2. Step 2: Convert to fraction form
    74,779.45/112,190.34 = 30,438.02/x
  3. Step 3: Cross multiply
    74,779.45x = 112,190.34 × 30,438.02
  4. Step 4: Simplify right side
    74,779.45x = 3,414,851,812.73
  5. Step 5: Solve for x
    x = 3,414,851,812.73/74,779.45
  6. Step 6: Final answer
    x = 45,665.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.