Home / 81,378.05-122,084.51-25,216.93

Finding the Fourth Proportional to 81,378.05, 122,084.51 and 25,216.93

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Solution

The fourth proportional to 81,378.05, 122,084.51 and 25,216.93 is: 37,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,378.05 : 122,084.51 = 25,216.93 : x
  2. Step 2: Convert to fraction form
    81,378.05/122,084.51 = 25,216.93/x
  3. Step 3: Cross multiply
    81,378.05x = 122,084.51 × 25,216.93
  4. Step 4: Simplify right side
    81,378.05x = 3,078,596,542.75
  5. Step 5: Solve for x
    x = 3,078,596,542.75/81,378.05
  6. Step 6: Final answer
    x = 37,830.80

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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.