Home / 81,484.55-122,207.98-31,548.05

Finding the Fourth Proportional to 81,484.55, 122,207.98 and 31,548.05

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Solution

The fourth proportional to 81,484.55, 122,207.98 and 31,548.05 is: 47,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,484.55 : 122,207.98 = 31,548.05 : x
  2. Step 2: Convert to fraction form
    81,484.55/122,207.98 = 31,548.05/x
  3. Step 3: Cross multiply
    81,484.55x = 122,207.98 × 31,548.05
  4. Step 4: Simplify right side
    81,484.55x = 3,855,423,463.44
  5. Step 5: Solve for x
    x = 3,855,423,463.44/81,484.55
  6. Step 6: Final answer
    x = 47,314.78

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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.