Home / 74,098.72-111,188.40-40,777.12

Finding the Fourth Proportional to 74,098.72, 111,188.40 and 40,777.12

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Solution

The fourth proportional to 74,098.72, 111,188.40 and 40,777.12 is: 61,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,098.72 : 111,188.40 = 40,777.12 : x
  2. Step 2: Convert to fraction form
    74,098.72/111,188.40 = 40,777.12/x
  3. Step 3: Cross multiply
    74,098.72x = 111,188.40 × 40,777.12
  4. Step 4: Simplify right side
    74,098.72x = 4,533,942,729.41
  5. Step 5: Solve for x
    x = 4,533,942,729.41/74,098.72
  6. Step 6: Final answer
    x = 61,187.87

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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.