Home / 77,136.72-106,431.39-48,825.96

Finding the Fourth Proportional to 77,136.72, 106,431.39 and 48,825.96

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Solution

The fourth proportional to 77,136.72, 106,431.39 and 48,825.96 is: 67,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,136.72 : 106,431.39 = 48,825.96 : x
  2. Step 2: Convert to fraction form
    77,136.72/106,431.39 = 48,825.96/x
  3. Step 3: Cross multiply
    77,136.72x = 106,431.39 × 48,825.96
  4. Step 4: Simplify right side
    77,136.72x = 5,196,614,790.88
  5. Step 5: Solve for x
    x = 5,196,614,790.88/77,136.72
  6. Step 6: Final answer
    x = 67,368.88

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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.