Home / 81,017.90-121,487.97-41,554.70

Finding the Fourth Proportional to 81,017.90, 121,487.97 and 41,554.70

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Solution

The fourth proportional to 81,017.90, 121,487.97 and 41,554.70 is: 62,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,017.90 : 121,487.97 = 41,554.70 : x
  2. Step 2: Convert to fraction form
    81,017.90/121,487.97 = 41,554.70/x
  3. Step 3: Cross multiply
    81,017.90x = 121,487.97 × 41,554.70
  4. Step 4: Simplify right side
    81,017.90x = 5,048,396,146.96
  5. Step 5: Solve for x
    x = 5,048,396,146.96/81,017.90
  6. Step 6: Final answer
    x = 62,312.11

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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.