Home / 81,279.90-121,822.65-41,816.70

Finding the Fourth Proportional to 81,279.90, 121,822.65 and 41,816.70

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Solution

The fourth proportional to 81,279.90, 121,822.65 and 41,816.70 is: 62,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.90 : 121,822.65 = 41,816.70 : x
  2. Step 2: Convert to fraction form
    81,279.90/121,822.65 = 41,816.70/x
  3. Step 3: Cross multiply
    81,279.90x = 121,822.65 × 41,816.70
  4. Step 4: Simplify right side
    81,279.90x = 5,094,221,208.26
  5. Step 5: Solve for x
    x = 5,094,221,208.26/81,279.90
  6. Step 6: Final answer
    x = 62,675.04

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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.