Home / 81,403.12-122,006.26-41,938.70

Finding the Fourth Proportional to 81,403.12, 122,006.26 and 41,938.70

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Solution

The fourth proportional to 81,403.12, 122,006.26 and 41,938.70 is: 62,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403.12 : 122,006.26 = 41,938.70 : x
  2. Step 2: Convert to fraction form
    81,403.12/122,006.26 = 41,938.70/x
  3. Step 3: Cross multiply
    81,403.12x = 122,006.26 × 41,938.70
  4. Step 4: Simplify right side
    81,403.12x = 5,116,783,726.57
  5. Step 5: Solve for x
    x = 5,116,783,726.57/81,403.12
  6. Step 6: Final answer
    x = 62,857.35

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1.5x scale

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.