Home / 87,424.64-131,172.96-31,271.84

Finding the Fourth Proportional to 87,424.64, 131,172.96 and 31,271.84

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Solution

The fourth proportional to 87,424.64, 131,172.96 and 31,271.84 is: 46,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,424.64 : 131,172.96 = 31,271.84 : x
  2. Step 2: Convert to fraction form
    87,424.64/131,172.96 = 31,271.84/x
  3. Step 3: Cross multiply
    87,424.64x = 131,172.96 × 31,271.84
  4. Step 4: Simplify right side
    87,424.64x = 4,102,019,817.45
  5. Step 5: Solve for x
    x = 4,102,019,817.45/87,424.64
  6. Step 6: Final answer
    x = 46,920.64

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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.