Home / 81,513.32-122,244.71-39,367.22

Finding the Fourth Proportional to 81,513.32, 122,244.71 and 39,367.22

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Solution

The fourth proportional to 81,513.32, 122,244.71 and 39,367.22 is: 59,038.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,513.32 : 122,244.71 = 39,367.22 : x
  2. Step 2: Convert to fraction form
    81,513.32/122,244.71 = 39,367.22/x
  3. Step 3: Cross multiply
    81,513.32x = 122,244.71 × 39,367.22
  4. Step 4: Simplify right side
    81,513.32x = 4,812,433,584.35
  5. Step 5: Solve for x
    x = 4,812,433,584.35/81,513.32
  6. Step 6: Final answer
    x = 59,038.62

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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.