Home / 74,980.30-112,452.45-43,321.90

Finding the Fourth Proportional to 74,980.30, 112,452.45 and 43,321.90

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Solution

The fourth proportional to 74,980.30, 112,452.45 and 43,321.90 is: 64,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,980.30 : 112,452.45 = 43,321.90 : x
  2. Step 2: Convert to fraction form
    74,980.30/112,452.45 = 43,321.90/x
  3. Step 3: Cross multiply
    74,980.30x = 112,452.45 × 43,321.90
  4. Step 4: Simplify right side
    74,980.30x = 4,871,653,793.66
  5. Step 5: Solve for x
    x = 4,871,653,793.66/74,980.30
  6. Step 6: Final answer
    x = 64,972.45

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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.