Home / 86,489.28-129,737.78-26,513.44

Finding the Fourth Proportional to 86,489.28, 129,737.78 and 26,513.44

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Solution

The fourth proportional to 86,489.28, 129,737.78 and 26,513.44 is: 39,771.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,489.28 : 129,737.78 = 26,513.44 : x
  2. Step 2: Convert to fraction form
    86,489.28/129,737.78 = 26,513.44/x
  3. Step 3: Cross multiply
    86,489.28x = 129,737.78 × 26,513.44
  4. Step 4: Simplify right side
    86,489.28x = 3,439,794,845.76
  5. Step 5: Solve for x
    x = 3,439,794,845.76/86,489.28
  6. Step 6: Final answer
    x = 39,771.34

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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.