Home / 74,977.40-103,469.24-40,985.96

Finding the Fourth Proportional to 74,977.40, 103,469.24 and 40,985.96

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Solution

The fourth proportional to 74,977.40, 103,469.24 and 40,985.96 is: 56,560.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,977.40 : 103,469.24 = 40,985.96 : x
  2. Step 2: Convert to fraction form
    74,977.40/103,469.24 = 40,985.96/x
  3. Step 3: Cross multiply
    74,977.40x = 103,469.24 × 40,985.96
  4. Step 4: Simplify right side
    74,977.40x = 4,240,786,131.87
  5. Step 5: Solve for x
    x = 4,240,786,131.87/74,977.40
  6. Step 6: Final answer
    x = 56,560.86

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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.