Home / 81,984.72-122,981.50-25,829.24

Finding the Fourth Proportional to 81,984.72, 122,981.50 and 25,829.24

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Solution

The fourth proportional to 81,984.72, 122,981.50 and 25,829.24 is: 38,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,984.72 : 122,981.50 = 25,829.24 : x
  2. Step 2: Convert to fraction form
    81,984.72/122,981.50 = 25,829.24/x
  3. Step 3: Cross multiply
    81,984.72x = 122,981.50 × 25,829.24
  4. Step 4: Simplify right side
    81,984.72x = 3,176,518,679.06
  5. Step 5: Solve for x
    x = 3,176,518,679.06/81,984.72
  6. Step 6: Final answer
    x = 38,745.25

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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.