Home / 81,463.84-122,157.12-31,567.20

Finding the Fourth Proportional to 81,463.84, 122,157.12 and 31,567.20

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Solution

The fourth proportional to 81,463.84, 122,157.12 and 31,567.20 is: 47,335.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,463.84 : 122,157.12 = 31,567.20 : x
  2. Step 2: Convert to fraction form
    81,463.84/122,157.12 = 31,567.20/x
  3. Step 3: Cross multiply
    81,463.84x = 122,157.12 × 31,567.20
  4. Step 4: Simplify right side
    81,463.84x = 3,856,158,238.46
  5. Step 5: Solve for x
    x = 3,856,158,238.46/81,463.84
  6. Step 6: Final answer
    x = 47,335.83

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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.