Home / 81,778.04-122,680.88-25,607.07

Finding the Fourth Proportional to 81,778.04, 122,680.88 and 25,607.07

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Solution

The fourth proportional to 81,778.04, 122,680.88 and 25,607.07 is: 38,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,778.04 : 122,680.88 = 25,607.07 : x
  2. Step 2: Convert to fraction form
    81,778.04/122,680.88 = 25,607.07/x
  3. Step 3: Cross multiply
    81,778.04x = 122,680.88 × 25,607.07
  4. Step 4: Simplify right side
    81,778.04x = 3,141,497,849.81
  5. Step 5: Solve for x
    x = 3,141,497,849.81/81,778.04
  6. Step 6: Final answer
    x = 38,414.93

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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.